Nicene and Post-Nicene Fathers, Vol. II:
City of God: Chapter 15

Chapter 15.—Whether All the Things Prophesied in the Psalms Concerning Christ and His Church Should Be Taken Up in the Text of This Work.

And now I see it may be expected of me that I shall open up in this part of this book what David may have prophesied in the Psalms concerning the Lord Jesus Christ or His Church.  But although I have already done so in one instance, I am prevented from doing as that expectation seems to demand, rather by the abundance than the scarcity of matter.  For the necessity of shunning prolixity forbids my setting down all things; yet I fear lest if I select some I shall appear to many, who know these things, to have passed by the more necessary.  Besides, the proof that is adduced ought to be supported by the context of the whole psalm, so that at least there may be nothing against it if everything does not support it; lest we should seem, after the fashion of the centos, to gather for the thing we wish, as it were, verses out of a grand poem, what shall be found to have been written not about it, but about some other and widely different thing.  But ere this could be pointed out in each psalm, the whole of it must be expounded; and how great a work that would be, the volumes of others, as well as our own, in which we have done it, show well enough.  Let him then who will, or can, read these volumes, and he will find out how many and great things David, at once king and prophet, has prophesied concerning Christ and His Church, to wit, concerning the King and the city which He has built.