E. S. McKitrick’s article “Christ in the Psalms” can be found here. It is taken from The Psalms in Worship, edited by John McNaugher (1907).
One essential reason for this internal completeness of the Psalter is that Christ is the central figure in it, as He is in the entire Word of God. Every book, indeed, of the Old Testament is intended to lead directly or indirectly to Jesus Christ. But in this respect the Book of Psalms stands preeminent among the entire thirty-nine. Of this the illustrious Edwards said, “The main subjects of these songs were the glorious things of the Gospel, as is evident by the interpretation that is often put upon them, and the use that is made of them, in the New Testament. For, there is no one book of the Old Testament that is so often quoted in the New as the Book of Psalms. Here Christ is spoken of in multitudes of songs.” By the inspired writers of the New Testament the Psalter is used chiefly as a storehouse from which to bring forth Messianic prophecies to be expounded and applied. Indeed it has been affirmed that it would not be much beyond the fact, if any, to say that there are more references to the Psalms, as speaking of Christ, than to the whole of Moses and the Prophets taken together.
Image taken from here.
