Augustine of Hippo, on Ps 109:1

“The Lord said to my Lord: Sit thou at my right hand: Until I make thy enemies thy footstool.”

“"The Lord said unto my Lord, Sit on My right hand, until I make Your enemies Your footstool" [Psalm 110:1]. We ought, therefore, thoroughly to consider this question proposed to the Jews by the Lord, in the very commencement of the Psalm. For if what the .Jews answered be asked of us, whether we confess or deny it; God forbid that we should deny it. If it be said to us, Is Christ the Son of David, or not? If we reply, No, we contradict the Gospel for the Gospel of St. Matthew thus begins, "The book of the generation of Jesus Christ, the Son of David." [Matthew 1:1] The Evangelist declares, that he is writing the book of the generation of Jesus Christ, the Son of David. The Jews, then, when questioned by Christ, whose Son they believed Christ to be, rightly answered, the Son of David. The Gospel agrees with their answer. Not only the suspicion of the Jews, but the faith of Christians, does declare this...."If then David in the spirit called Him Lord, how is He his son?" The Jews were silent at this question: they found no further reply: yet they did not seek Him as the Lord, for they did not acknowledge Him to be Himself that Son of David. But let us, brethren, both believe and declare: for, "with the heart we believe unto righteousness: but with the mouth confession is made unto salvation;" [Romans 10:10] let us believe, I say, and let us declare both the Son of David, and the Lord of David. Let us not be ashamed of the Son of David, lest we find the Lord of David angry with us.”

Imported from an open dataset — not yet checked against the printed edition.