Nicene and Post-Nicene Fathers, Ser. II, Vol. X:
Dogmatic Treatises, Ethical Works, and Sermons.: Exposition of the Christian Faith.

p. 199

Exposition of the Christian Faith.

Preface.
Prefatory Note.
Book I.
Prologue.
Chapter I. The author distinguishes the faith from the errors of Pagans, Jews, and Heretics, and after explaining the significance of the names “God” and “Lord,” shows clearly the difference of Persons in Unity of Essence. In dividing the Essence, the Arians not only bring in the doctrine of three Gods, but even overthrow the dominion of the Trinity.
Chapter II. The Emperor is exhorted to display zeal in the Faith. Christ's perfect Godhead is shown from the unity of will and working which He has with the Father. The attributes of Divinity are shown to be proper to Christ, Whose various titles prove His essential unity, with distinction of Person. In no other way can the unity of God be maintained.
Chapter III. By evidence gathered from Scripture the unity of Father and Son is proved, and firstly, a passage, taken from the Book of Isaiah, is compared with others and expounded in such sort as to show that in the Son there is no diversity from the Father's nature, save only as regards the flesh; whence it follows that the Godhead of both Persons is One. This conclusion is confirmed by the authority of Baruch.
Chapter IV. The Unity of God is necessarily implied in the order of Nature, in the Faith, and in Baptism. The gifts of the Magi declare (1) the Unity of the Godhead; (2) Christ's Godhead and Manhood. The truth of the doctrine of the Trinity in Unity is shown in the Angel walking in the midst of the furnace with Shadrach, Meshach, and Abednego.
Chapter V. The various blasphemies uttered by the Arians against Christ are cited. Before these are replied to, the orthodox are admonished to beware of the captious arguments of philosophers, forasmuch as in these especially did the heretics put their trust.
Chapter VI. By way of leading up to his proof that Christ is not different from the Father, St. Ambrose cites the more famous leaders of the Arian party, and explains how little their witness agrees, and shows what defence the Scriptures provide against them.
Chapter VII. The likeness of Christ to the Father is asserted on the authority of St. Paul, the prophets, and the Gospel, and especially in reliance upon the creation of man in God's image.
Chapter VIII. The likeness of the Son to the Father being proved, it is not hard to prove the Son's eternity, though, indeed, this may be established on the authority of the Prophet Isaiah and St. John the Evangelist, by which authority the heretical leaders are shown to be refuted.
Chapter IX. St. Ambrose questions the heretics and exhibits their answer, which is, that the Son existed, indeed, before all time, yet was not co-eternal with the Father, whereat the Saint shows that they represent the Godhead as changeable, and further, that each Person must be believed to be eternal.
Chapter X. Christ's eternity being proved from the Apostle's teaching, St. Ambrose admonishes us that the Divine Generation is not to be thought of after the fashion of human procreation, nor to be too curiously pried into. With the difficulties thence arising he refuses to deal, saying that whatsoever terms, taken from our knowledge of body, are used in speaking of this Divine Generation, must be understood with a spiritual meaning.
Chapter XI. It cannot be proved from Scripture that the Father existed before the Son, nor yet can arguments taken from human reproduction avail to this end, since they bring in absurdities without end. To dare to affirm that Christ began to exist in the course of time is the height of blasphemy.
Chapter XII. Further objections to the Godhead of the Son are met by the same answer--to wit, that they may equally be urged against the Father also. The Father, then, being in no way confined by time, place, or anything else created, no such limitation is to be imposed upon the Son, Whose marvellous generation is not only of the Father, but of the Virgin also, and therefore, since in His generation of the Father no distinction of sex, or the like, was involved, neither was it in His generation of the Virgin.
Chapter XIII. Discussion of the Divine Generation is continued. St. Ambrose illustrates its method by the same example as that employed by the author of the Epistle to the Hebrews. The duty of believing what is revealed is shown by the example of Nebuchadnezzar and St. Peter. By the vision granted to St. Peter was shown the Son's Eternity and Godhead--the Apostle, then, must be believed in preference to the teachers of philosophy, whose authority was everywhere falling into discredit. The Arians, on the other hand, are shown to be like unto the heathen.
Chapter XIV. That the Son of God is not a created being is proved by the following arguments: (1) That He commanded not that the Gospel should be preached to Himself; (2) that a created being is given over unto vanity; (3) that the Son has created all things; (4) that we read of Him as begotten; and (5) that the difference of generation and adoption has always been understood in those places where both natures--the divine and the human--are declared to co-exist in Him. All of which testimony is confirmed by the Apostle's interpretation.
Chapter XV. An explanation of Acts ii. 36 and Proverbs viii. 22, which are shown to refer properly to Christ's manhood alone.
Chapter XVI. The Arians blaspheme Christ, if by the words “created” and “begotten” they mean and understand one and the same thing. If, however, they regard the words as distinct in meaning, they must not speak of Him, of Whom they have read that He was begotten, as if He were a created being. This rule is upheld by the witness of St. Paul, who, professing himself a servant of Christ, forbade worship of a created being. God being a substance pure and uncompounded, there is no created nature in Him; furthermore, the Son is not to be degraded to the level of things created, seeing that in Him the Father is well pleased.
Chapter XVII. That Christ is very God is proved from the fact that He is God's own Son, also from His having been begotten and having come forth from God, and further, from the unity of will and operation subsisting in Father and Son. The witness of the apostles and of the centurion--which St. Ambrose sets over against the Arian teaching--is adduced, together with that of Isaiah and St. John.
Chapter XVIII. The errors of the Arians are mentioned in the Nicene Definition of the Faith, to prevent their deceiving anybody. These errors are recited, together with the anathema pronounced against them, which is said to have been not only pronounced at Nicæa, but also twice renewed at Ariminum.
Chapter XIX. Arius is charged with the first of the above-mentioned errors, and refuted by the testimony of St. John. The miserable death of the Heresiarch is described, and the rest of his blasphemous errors are one by one examined and disproved.
Chapter XX. St. Ambrose declares his desire that some angel would fly to him to purify him, as once the Seraph did to Isaiah--nay more, that Christ Himself would come to him, to the Emperor, and to his readers, and finally prays that Gratian and the rest of the faithful may be exalted by the power and spell of the Lord's Cup, which he describes in mystic language.
Book II.
Introduction.
Chapter I. The Arian argument from S. Mark x. 18, “There is none good but one, that is, God,” refuted by explanation of these words of Christ.
Chapter II. The goodness of the Son of God is proved from His works, namely, His benefits that He showed towards the people of Israel under the Old Covenant, and to Christians under the New. It is to one's own interest to believe in the goodness of Him Who is one's Lord and Judge. The Father's testimony to the Son. No small number of the Jewish people bear witness to the Son; the Arians therefore are plainly worse than the Jews. The words of the Bride, declaring the same goodness of Christ.
Chapter III. Forasmuch as God is One, the Son of God is God, good and true.
Chapter IV. The omnipotence of the Son of God, demonstrated on the authority of the Old and the New Testament.
Chapter V. Certain passages from Scripture, urged against the Omnipotence of Christ, are resolved; the writer is also at especial pains to show that Christ not seldom spoke in accordance with the affections of human nature.
Chapter VI. The passages of Scripture above cited are taken as an occasion for a digression, wherein our Lord's freedom of action is proved from the ascription to the Spirit of such freedom, and from places where it is attributed to the Son.
Chapter VII. The resolution of the difficulty set forth for consideration is again taken in hand. Christ truly and really took upon Him a human will and affections, the source of whatsoever was not in agreement with His Godhead, and which must be therefore referred to the fact that He was at the same time both God and man.
Chapter VIII. Christ's saying, “The Father is greater than I,” is explained in accordance with the principle just established. Other like sayings are expounded in like fashion. Our Lord cannot, as touching His Godhead, be called inferior to the Father.
Chapter IX. The objection that the Son, being sent by the Father, is, in that regard at least, inferior, is met by the answer that He was also sent by the Spirit, Who is yet not considered greater than the Son. Furthermore, the Spirit, in His turn, is sent by the Father to the Son, in order that Their unity in action might be shown forth. It is our duty, therefore, carefully to distinguish what utterances are to be fitly ascribed to Christ as God, and what to be ascribed to Him as man.
Chapter X. The objection taken on the ground of the Son's obedience is disproved, and the unity of power, Godhead, and operation in the Trinity set forth, Christ's obedience to His mother, to whom He certainly cannot be called inferior, is noticed.
Chapter XI. The purpose and healing effects of the Incarnation. The profitableness of faith, whereby we know that Christ bore all infirmities for our sakes,--Christ, Whose Godhead revealed Itself in His Passion; whence we understand that the mission of the Son of God entailed no subservience, which belief we need not fear lest it displease the Father, Who declares Himself to be well pleased in His Son.
Chapter XII. Do the Catholics or the Arians take the better course to assure themselves of the favour of Christ as their Judge? An objection grounded on Ps. cx. 1 is disposed of, it being shown that when the Son is invited by the Father to sit at His right hand, no subjection is intended to be signified--nor yet any preferment, in that the Son sits at the Father's right hand. The truth of the Trinity of Persons in God, and of the Unity of their Nature, is shown to be proved by the angelic Trisagion.
Chapter XIII. The wicked and dishonourable opinions held by Arians, Sabellians, and Manichæans as concerning their Judge are shortly refuted. Christ's remonstrances regarding the rest of His adversaries being set forth, St. Ambrose expresses a hope of milder judgment for himself.
Chapter XIV. The sentence of the Judge is set forth, the counterpleas of the opposers are considered, and the finality of the sentence, from which there is no appeal, proved.
Chapter XV. St. Ambrose deprecates any praise of his own merits: in any case, the Faith is sufficiently defended by the authoritative support of holy Scripture, to whose voice the Arians, stubborn as the Jews, are deaf. He prays that they may be moved to love the truth; meanwhile, they are to be avoided, as heretics and enemies of Christ.
Chapter XVI. St. Ambrose assures Gratian of victory, declaring that it has been foretold in the prophecies of Ezekiel. This hope is further stayed upon the emperor's piety, the former disasters being the punishment of Eastern heresy. The book closes with a prayer to God, that He will now show His mercy, and save the army, the land, and the sovereign of the faithful.
Book III.
Chapter I. Statement of the reasons wherefore the matters, treated of shortly in the two former, are dealt with more at length in the three later books. Defence of the employment of fables, which is supported by the example of Holy Writ, wherein are found various figures of poetic fable, in particular the Sirens, which are figures of sensual pleasures, and which Christians ought to be taught to avoid, by the words of Paul and the deeds of Christ.
Chapter II. The incidents properly affecting the body which Christ for our sake took upon Him are not to be accounted to His Godhead, in respect whereof He is the Most Highest. To deny which is to say that the Father was incarnate. When we read that God is one, and that there is none other beside Him, or that He alone has immortality, this must be understood as true of Christ also, not only to avoid the sinful heresy above-mentioned (Patripassianism), but also because the activity of the Father and the Son is declared to be one and the same.
Chapter III. That the Father and the Son must not be divided is proved by the words of the Apostle, seeing that it is befitting to the Son that He should be blessed, only Potentate, and immortal, by nature, that is, and not by grace, as even the angels themselves are immortal, and that He should dwell in the unapproachable light. How it is that the Father and the Son are alike and equally said to be “alone.”
Chapter IV. We are told that Christ was only “made” so far as regards the flesh. For the redemption of mankind He needed no means of aid, even as He needed none in order to His Resurrection, whereas others, in order to raise the dead, had need of recourse to prayer. Even when Christ prayed, the prayer was offered by Him in His capacity as human; whilst He must be accounted divine from the fact that He commanded (that such and such things should be done). On this point the devil's testimony is truer than the Arians' arguments. The discussion concludes with an explanation of the reason why the title of “mighty” is given to the Son of Man.
Chapter V. Passages brought forward from Scripture to show that “made” does not always mean the same as “created;” whence it is concluded that the letter of Holy Writ should not be made the ground of captious arguments, after the manner of the Jews, who, however, are shown to be not so bad as the heretics, and thus the principle already set forth is confirmed anew.
Chapter VI. In order to dispose of an objection grounded on a text in St. John, St. Ambrose first shows that the Arian interpretation lends countenance to the Manichæans; then, after setting forth the different ways of dividing the words in this same passage, he shows plainly that it cannot, without dishonour to the Father, be understood with such reference to the Godhead as the Arians give it, and expounds the true meaning thereon.
Chapter VII. Solomon's words, “The Lord created Me,” etc., mean that Christ's Incarnation was done for the redemption of the Father's creation, as is shown by the Son's own words. That He is the “beginning” may be understood from the visible proofs of His virtuousness, and it is shown how the Lord opened the ways of all virtues, and was their true beginning.
Chapter VIII. The prophecy of Christ's Godhead and Manhood, contained in the verse of Isaiah just now cited, is unfolded, and its force in refuting various heresies demonstrated.
Chapter IX. The preceding quotation from Solomon's Proverbs receives further explanation.
Chapter X. Observations on the words of John the Baptist (John i. 30), which may be referred to divine fore-ordinance, but at any rate, as explained by the foregoing considerations, must be understood of the Incarnation. The precedence of Christ is mystically expounded, with reference to the history of Ruth.
Chapter XI. St. Ambrose returns to the main question, and shows that whenever Christ is said to have “been made” (or “become”), this must be understood with reference to His Incarnation, or to certain limitations. In this sense several passages of Scripture--especially of St. Paul--are expounded. The eternal Priesthood of Christ, prefigured in Melchizedek. Christ possesses not only likeness, but oneness with the Father.
Chapter XII. The kingdom of the Father and of the Son is one and undivided, so likewise is the Godhead of each.
Chapter XIII. The majesty of the Son is His own, and equal to that of the Father, and the angels are not partakers, but beholders thereof.
Chapter XIV. The Son is of one substance with the Father.
Chapter XV. The Arians, inasmuch as they assert the Son to be “of another substance,” plainly acknowledge substance in God. The only reason why they avoid the use of this term is that they will not, as Eusebius of Nicomedia has made it evident, confess Christ to be the true Son of God.
Chapter XVI. In order to forearm the orthodox against the stratagems of the Arians, St. Ambrose discloses some of the deceitful confessions used by the latter, and shows by various arguments, that though they sometimes call the Son “God,” it is not enough, unless they also admit His equality with the Father.
Chapter XVII. An objection based on St. Stephen's vision of the Lord standing is disposed of, and from the prayers of the same saint, addressed to the Son of God, the equality of the Son with the Father is shown.
Book IV.
Chapter I. The marvel is, not that men have failed to know Christ, but that they have not listened to the words of the Scriptures. Christ, indeed, was not known, even of angels, save by revelation, nor again, by His forerunner. Follows a description of Christ's triumphal ascent into heaven, and the excellence of its glory over the assumption of certain prophets. Lastly, from exposition of the conversation with angels upon this occasion, the omnipotence of the Son is proved, as against the Arians.
Chapter II. None can ascend to heaven without faith; in any case, he who hath so ascended thither will be cast out wherefore, faith must be zealously preserved. We ourselves each have a heaven within, the gates whereof must be opened and be raised by confession of the Godhead of Christ, which gates are not raised by Arians, nor by those who seek the Son amongst earthly things, and who must therefore, like the Magdalene, be sent back to the apostles, against whom the gates of hell shall not prevail. Scriptures are cited to show that the servant of the Lord must not diminish aught of his Master's honour.
Chapter III. The words, “The head of every man is Christ…and the head of Christ is God” misused by the Arians, are now turned back against them, to their confutation. Next, another passage of Scripture, commonly taken by the same heretics as a ground of objection, is called in to show that God is the Head of Christ, in so far as Christ is human, in regard of His Manhood, and the unwisdom of their opposition upon the text, “He who planteth and He who watereth are one,” is displayed. After which explanations, the meaning of the doctrine that the Father is in the Son, and the Son in the Father, and that the faithful are in Both, is expounded.
Chapter IV. The passage quoted adversely by heretics, namely, “The Son can do nothing of Himself,” is first explained from the words which follow; then, the text being examined, word by word, their acceptation in the Arian sense is shown to be impossible without incurring the charge of impiety or absurdity, the proof resting chiefly on the creation of the world and certain miracles of Christ.
Chapter V. Continuing the exposition of the disputed passage, which he had begun, Ambrose brings forward four reasons why we affirm that something cannot be, and shows that the first three fail to apply to Christ, and infers that the only reason why the Son can do nothing of Himself is His Unity in Power with the Father.
Chapter VI. The fourth kind of impossibility (§49) is now taken into consideration, and it is shown that the Son does nothing that the Father approves not, there being between Them perfect unity of will and power.
Chapter VII. The doctrine had in view for enforcement is corroborated by the truth that the Son is the Word of the Father--the Word, not in the sense in which we understand the term, but a living and active Word. This being so, we cannot deny Him to be of the same Will, Power, and Substance with the Father.
Chapter VIII. The heretical objection, that the Son cannot be equal to the Father, because He cannot beget a Son, is turned back upon the authors of it. From the case of human nature it is shown that whether a person begets offspring or not, has nothing to do with his power. Most of all must this be true since, otherwise, the Father Himself would have to be pronounced wanting in power. Whence it follows that we have no right to judge of divine things by human, and must take our stand upon the authority of Holy Writ, otherwise we must deny all power either to the Father or to the Son.
Chapter IX. Various quibbling arguments, advanced by the Arians to show that the Son had a beginning of existence, are considered and refuted, on the ground that whilst the Arians plainly prove nothing, or if they prove anything, prove it against themselves, (inasmuch as He Who is the beginning of all cannot Himself have a beginning), their reasonings do not even hold true with regard to facts of human existence. Time could not be before He was, Who is the Author of time--if indeed at some time He was not in existence, then the Father was without His Power and Wisdom. Again, our own human experience shows that a person is said to exist before he is born.
Chapter X. The objection that Christ, on the showing of St. John, lives because of the Father, and therefore is not to be regarded as equal with the Father, is met by the reply that for the Life of the Son, in respect of His Godhead, there has never been a time when it began; and that it is dependent upon none, whilst the passage in question must be understood as referring to His human life, as is shown by His speaking there of His body and blood. Two expositions of the passage are given, the one of which is shown to refer to Christ's Manhood, whilst the second teaches His equality with the Father, as also His likeness with men. Rebuke is administered to the Arians for the insult which they are seeking to inflict upon the Son, and the sense in which the Son can be said to live “because of” the Father is explained, as also the union of life with the divine Life. A further objection, based upon the Son's prayer that He may be glorified by the Father, is briefly refuted.
Chapter XI. The particular distinction which the Arians endeavoured to prove upon the Apostle's teaching that all things are “of” the Father and “through” the Son, is overthrown, it being shown that in the passage cited the same Omnipotence is ascribed both to Father and to Son, as is proved from various texts, especially from the words of St. Paul himself, in which heretics foolishly find a reference to the Father only, though indeed there is no diminution or inferiority of the Son's sovereignty proved, even by such a reference. Finally, the three phrases, “of Whom,” “through Whom,” “in Whom,” are shown to suppose or imply no difference (of power), and each and all to hold true of the Three Persons.
Chapter XII. The comparison, found in the Gospel of St. John, of the Son to a Vine and the Father to a husbandman, must be understood with reference to the Incarnation. To understand it with reference to the Divine Generation is to doubly insult the Son, making Him inferior to St. Paul, and bringing Him down to the level of the rest of mankind, as well as in like manner the Father also, by making Him not merely to be on one footing with the same Apostle, but even of no account at all. The Son, indeed, in so far as being God, is also the husbandman, and, as regards His Manhood, a grape-cluster. True statement of the Father's pre-eminence.
Book V.
Prologue.
Chapter I. How impious the Arians are, in attacking that on which human happiness depends. John ever unites the Son with the Father, especially where he says: “That they may know Thee, the only true God, etc.” In that place, then, we must understand the words “true God” also of the Son; for it cannot be denied that He is God, and it cannot be said He is a false god, and least of all that He is God by appellation only. This last point being proved from the Apostle's words, we rightly confess that Christ is true God.
Chapter II. Since it has been proved that the Son is true God, and in that is not inferior to the Father, it is shown that by the word solus (alone) when used of the Father in the Scriptures, the Son is not excluded; nay, that this expression befits Him above all, and Him alone. The Trinity is alone, not amongst all, but above all. The Son alone does what the Father does, and alone has immortality. But we must not for this reason separate Him from the Father in our controversies. We may, however, understand that passage of the Incarnation. Lastly the Father is shut out from a share in the redemption of men by those who would have the Son to be separated from Him.
Chapter III. To the objection of the Arians, that two Gods are introduced by a unity of substance, the answer is that a plurality of Gods is more likely to be inferred from diversity of substance. Further, their charge recoils upon themselves. Manifold diversity is the reason why two men cannot be said to be one man, though all men are called individually man, where a unity of nature is referred to. There is one nature alone in them, but there is wholly a unity in the Divine Persons. Therefore the Son is not to be severed from the Father, especially as they dare not deny that worship is due to Him.
Chapter IV. It is objected by heretics that Christ offered worship to His Father. But instead it is shown that this must be referred to His humanity, as is clear from an examination of the passage. However, it also offers fresh witness to His Godhead, as we often see it happening in other actions that Christ did.
Chapter V. Ambrose answers those who press the words of the Lord to the mother of Zebedee's children, by saying that they were spoken out of kindness, because Christ was unwilling to cause her grief. Ample reason for such tenderness is brought forward. The Lord would rather leave the granting of that request to the Father, than declare it to be impossible. This answer of Christ's, however, is not to His detriment, as is shown both by His very words, and also by comparing them with other passages.
Chapter VI. Wishing to answer the above-stated objection somewhat more fully, he maintains that this request, had it not been impossible in itself, would have been possible for Christ to grant; especially as the Father has given all judgment to Him; which gift we must understand to have been given without any feature of imperfection. However, he proves that the request must be reckoned amongst the impossibilities. To make it really possible, he teaches that Christ's answer must be taken in accordance with His human nature, and shows this next by an exposition of the passage. Lastly, he once more confirms the reply he has given on the impossibility of Christ's session.
Chapter VII. Objection is taken to the following passage: “Thou hast loved them, as Thou hast loved Me.” To remove it, he shows first the impiety of the Arian explanation; then compares these words with others; and lastly, takes the whole passage into consideration. Hence he gathers that the mission of Christ, although it is to be received according to the flesh, is not to His detriment. When this is proved he shows how the divine mission takes place.
Chapter VIII. Christ, so far as He is true Son of God, has no Lord, but only so far as He is Man; as is shown by His words in which He addressed at one time the Father, at another the Lord. How many heresies are silenced by one verse of Scripture! We must distinguish between the things that belong to Christ as Son of God or as Son of David. For under the latter title only must we ascribe it to Him that He was a servant. Lastly, he points out that many passages cannot be taken except as referring to the Incarnation.
Chapter IX. The saint meets those who in Jewish wise object to the order of the words: “In the name of the Father and of the Son and of the Holy Ghost,” with the retort that the Son also is often placed before the Father; though he first points out that an answer to this objection has been already given by him.
Chapter X. The Arians openly take sides with the heathen in attacking the words: “He that believeth on Me, believeth not on Me,” etc. The true meaning of the passage is unfolded; and to prevent us from believing that the Lord forbade us to have faith in Him, it is shown how He spoke at one time as God, at another as Man. After bringing forward examples of various results of that faith, he shows that certain other passages also must be taken in the same way.
Chapter XI. We must refer the fact that Christ is said to speak nothing of Himself, to His human nature. After explaining how it is right to say that He hears and sees the Father as being God, He shows conclusively, by a large number of proofs, that the Son of God is not a creature.
Chapter XII. He confirms what has been already said, by the parable of the rich man who went into a far country to receive for himself a kingdom; and shows that when the Son delivers up the kingdom to the Father, we must not regard the fact that the Father is said to put all things in subjection under Him, in a disparaging way. Here we are the kingdom of Christ, and in Christ's kingdom. Hereafter we shall be in the kingdom of God, where the Trinity will reign together.
Chapter XIII. With the desire to learn what subjection to Christ means after putting forward and rejecting various ideas of subjection, he runs through the Apostle's words; and so puts an end to the blasphemous opinions of the heretics on this matter. The subjection, which is shown to be future, cannot concern the Godhead, since there has always been the greatest harmony of wills between the Father and the Son. Also to that same Son in His Godhead all things have indeed been made subject; but they are said to be not yet subject to Him in this sense, because all men do not obey His commands. But after that they have been made subject, then shall Christ also be made subject in them, and the Father's work be perfected.
Chapter XIV. He continues the discussion of the difficulty he has entered upon, and teaches that Christ is not subject but only according to the flesh. Christ, however, whilst in subjection in the Flesh, still gave proofs of His Godhead. He combats the idea that Christ is made subject in This. The humanity indeed, which He adopted, has been so far made subject in us, as ours has been raised in that very humanity of His. Lastly, we are taught, when that same subjection of Christ will take place.
Chapter XV. He briefly takes up again the same points of dispute, and shrewdly concludes from the unity of the divine power in the Father and the Son, that whatever is said of the subjection of the Son is to be referred to His humanity alone. He further confirms this on proof of the love, which exists alike in either.
Chapter XVI. The Arians are condemned by the Holy Spirit through the mouth of David: for they dare to limit Christ's knowledge. The passage cited by them in proof of this is by no means free from suspicion of having been corrupted. But to set this right, we must mark the word “Son.” For knowledge cannot fail Christ as Son of God, since He is Wisdom; nor the recognition of any part, for He created all things. It is not possible that He, who made the ages, cannot know the future, much less the day of judgment. Such knowledge, whether it concerns anything great or small, may not be denied to the Son, nor yet to the Holy Spirit. Lastly, various proofs are given from which we can gather that this knowledge exists in Christ.
Chapter XVII. Christ acted for our advantage in being unwilling to reveal the day of judgment. This is made plain by other words of our Lord and by a not dissimilar passage from Paul's writings. Other passages in which the same ignorance seems to be attributed to the Father are brought forward to meet those who are anxious to know why Christ answered His disciples, as though He did not know. From these Ambrose argues against them that if they admit ignorance and inability in the Father, they must admit that the same Substance exists in the Son as in the Father; unless they prefer to accuse the Son of falsehood; since it belongs neither to Him nor to the Father to deceive, but the unity of both is pointed out in the passage named.
Chapter XVIII. Wishing to give a reason for the Lord's answer to the apostles, he assigns the one received to Christ's tenderness. Then when another reason is supplied by others he confesses that it is true; for the Lord spoke it by reason of His human feelings. Hence he gathers that the knowledge of the Father and the Son is equal, and that the Son is not inferior to the Father. After having set beside the text, in which He is said to be inferior, another whereby He is declared to be equal, he censures the rashness of the Arians in judging about the Son, and shows that whilst they wickedly make Him to be inferior, He is rightly called a Stone by Himself.
Chapter XIX. The Saint having turned to God the Father, explains why he does not deride that the Son is inferior to the Father, then he declares it is not for him to measure the Son of God, since it was given to an angel--nay, perhaps even to Christ as man--to measure merely Jerusalem. Arius, he says, has shown himself to be an imitator of Satan. It is a rash thing to hold discussions on the divine Generation. Since so great a sign of human generation has been given by Isaiah, we ought not to make comparisons in divine things. Lastly he shows how carefully we ought to avoid the pride of Arius, by putting before us various examples of Scriptures.