Nicene and Post-Nicene Fathers, Ser. II, Vol. XI:
The Works of John Cassian.: Chapter I. Abbot Moses' introduction on the grace of discretion.

Chapter I.

Abbot Moses’ introduction on the grace of discretion.

And so when we had enjoyed our morning sleep, when to our delight the dawn of light again shone upon us, and we had begun to ask once more for his promised talk, the blessed Moses thus began: As I see you inflamed with such an eager desire, that I do not believe that that very short interval of quiet which I wanted to subtract from our spiritual conference and devote to bodily rest, has been of any use for the repose of your bodies, on me too a greater anxiety presses when I take note of your zeal. For I must give the greater care and devotion in paying my debt, in proportion as I see that you ask for it the more earnestly, according to that saying: “When thou sittest to eat with a ruler consider diligently what is put before thee, and put forth thine hand, knowing that thou oughtest to prepare such things.” 1160 Wherefore as we are going p. 308 to speak of the excellent quality of discretion and the virtue of it, on which subject our discourse of last night had entered at the termination of our discussion, we think it desirable first to establish its excellence by the opinions of the fathers, that when it has been shown what our predecessors thought and said about it, then we may bring forward some ancient and modern shipwrecks and mischances of various people, who were destroyed and hopelessly ruined because they paid but little attention to it, and then as well as we can we must treat of its advantages and uses: after a discussion of which we shall know better how we ought to seek after it and practise it, by the consideration of the importance of its value and grace. For it is no ordinary virtue nor one which can be freely gained by merely human efforts, unless they are aided by the Divine blessing, for we read that this is also reckoned among the noblest gifts of the Spirit by the Apostle: “To one is given by the Spirit the word of wisdom, to another the word of knowledge by the same Spirit, to another faith by the same Spirit, to another the gift of healing by the same Spirit,” and shortly after, “to another the discerning of spirits.” Then after the complete catalogue of spiritual gifts he subjoins: “But all these worketh one and the selfsame Spirit, dividing to every man severally as He will.” 1161 You see then that the gift of discretion is no earthly thing and no slight matter, but the greatest prize of divine grace. And unless a monk has pursued it with all zeal, and secured a power of discerning with unerring judgment the spirits that rise up in him, he is sure to go wrong, as if in the darkness of night and dense blackness, and not merely to fall down dangerous pits and precipices, but also to make frequent mistakes in matters that are plain and straightforward.

Footnotes

Prov. 23:1, 2 (LXX.).

1 Cor. xii. 8-11.