To the people, on the Feast of the Martyrs.
1. The solemn day of the Martyrs has dawned; therefore to the glory of the Passion of Christ, the Captain of Martyrs, who spared not Himself, ordering His soldiers to the fight; but first fought, first conquered, that their fighting He might encourage by His example, and aid with His majesty, and crown with His promise: let us hear somewhat from this Psalm pertaining to His Passion. I commend unto you oftentimes, nor grieve I to repeat, what for you is useful to retain, that our Lord Jesus Christ speaks often of Himself, that is, in His own Person, which is our Head; often in the person of His Body, which are we and His Church; but so that the words sound as from the mouth of one, that we may understand the Head and the Body to consist together in the unity of integrity, and not be separated the one from the other; as in that marriage whereof it is said, “They two shall be one flesh.” If then we acknowledge two in one flesh, let us acknowledge two in one voice. First, that which responding to the reader we have sung, though it be from the middle of the Psalm, from that I will take the beginning of this Sermon.
“Mine enemies speak evil of Me, When He shall die, then shall His Name perish”. This is the Person of our Lord Jesus Christ: but see if herein are not understood the members also. This was spoken also when our Lord Himself walked in the flesh here on earth....When they saw the people go after Him, they said, “When He shall die, then shall His Name perish;” that is, when we have slain Him, then shall His Name be no more in the earth, nor shall He seduce any, being dead; but by that very slaying of Him shall men understand, that He was but a man whom they followed, that there was in Him no hope of salvation, and shall desert His Name, and it shall no more be. He died, and His Name perished not, but His Name was sown as seed: He died, but He was a grain, which dying, the grain immediately sprang up. When glorified then was our Lord Jesus Christ, began they much more, and much more numerously to trust in Him; then began His members to hear what the Head had heard. Now then our Lord Jesus Christ being in heaven set down, and Himself in us labouring on earth, still spoke His enemies, “When He shall die, then shall His Name perish.” For hence stirred up the devil persecutions in the Church to destroy the Name of Christ. Unless haply ye think, brethren, that those Pagans, when they raged against Christians, said not this among themselves, “to blot out the Name of Christ from the earth.” That Christ might die again, not in the Head, but in His Body, were slain also the Martyrs. To the multiplying of the Church availed the Holy Blood poured forth, to help Its seminating came also the death of the Martyrs. “Precious in the sight of the Lord is the death of His Saints.” More and more were the Christians multiplied, nor was it fulfilled which spoke the enemies, “When He shall die, then shall His Name perish.” Even now also is it spoken. Down sit the Pagans, and compute them the years, they hear their fanatics saying, A time shall come when Christians shall be none, and those idols must be worshipped as before they were worshipped: still say they, “When He shall die, then shall His Name perish.” Twice conquered, now the third time be wise! Christ died, His Name has not perished: the Martyrs died, multiplied more is the Church, grows through all nations the Name of Christ. He who foretold of His own Death, and of His Resurrection, He who foretold of His Martyrs' death, and of their crown, He Himself foretold of His Church things yet to come, if truth He spoke twice, has He the third time lied? Vain then is what ye believe against Him; better is it that you believe in Him, that you may “understand upon the needy and poor One;” that “though He was rich, yet for your sakes He became poor, that you through His poverty might be rich.”...
Source: The Enarrations, or Expositions, on the Psalms (New Advent)