Let this be the reward of my adversaries from the LORD, and of them that speak evil against my soul.
All Commentaries on Psalms 109:20 Go To Psalms 109
Augustine of Hippo
AD 430
20. "But work Thou with me, O Lord God" (ver. 20). Some have thought "mercifully" should be understood, some have actually added it; but the best copies have the words thus: "But work Thou with me, O Lord God, for Thy Name's sake." Whence a higher sense should not be passed over, supposing the Son to have thus addressed the Father, "Deal Thou with Me," since the works of the Father and of the Son are the same. Where although we understand mercy,-for these words follow, "for sweet is Thy mercy,"-because he said not, "In me," or, "over me;" or anything of this sort: but, "work Thou with Me;" we rightly understand that the Father and Son together work mercifully towards the vessels of mercy. "Work with me," may also be understood to mean, help me. We use this expression in our daily language, when we are speaking of anything which is in our favour; "It works with us." For the Father aideth the Son, as far as the Deity aideth Man, on account of His having assumed the "form of a servant," to which Man, God, and to which "Form of a servant," the Lord too is Father. For in the "form of God," the Son needeth not aid, for He is equally all-powerful with the Father, on which account He also is the helper of men. ...And because when he had said, "Work Thou with me," he added, "for Thy Name's sake," he hath commended grace. For without previous deserving works, human nature was raised to such a height, that the whole in one, the Word and Flesh, that is, God and Man, was styled the Only-begotten Son of God. And this was done that that which had been lost might be sought by Him who had created it, through that which had not been lost; whence the following words, "For Thy mercy is sweet."