The Lord said unto my Lord. From this verse (Psalms 110:1-7.) our Lord shows that the Messiah, such as he was, was not a mere man, as the Pharisees thought, but that he was God, and therefore David's Lord. The meaning, therefore, is this, "The Lord God said to my Lord," that is, Christ, "Sit thou at my right hand," that is, when, after his cross, his death, and his resurrection, he will exalt him far above all principality and power, and place him next to him in heaven, that he may reign with supreme happiness and power and glory over all creatures. These words show that this is a Divine decree, fixed and irrevocable. Till I make thine enemies thy footstool ( ὑποπόδιον τῶν ποδῶν σου); literally, the footstool of thy feet; that is, reign with me in glory until the day of judgment, when I will make the wicked, all opposing powers, subject to thee. The word "till" does not imply that Christ will then cease to reign. "Of his kingdom there shall be no end." But he will then formally deliver up the kingdom to God, even the Father, only that he may receive it again as the second Person of the Godhead.
These verses are a condensation of the woes recorded at length by St. Matthew (Matthew 23:1-39.). And he said unto them in his doctrine ( ἐν τῇ διδαχῇ αὑτοῦ)—literally, in his teaching—Beware of the scribes which desire ( τῶν θελόντων) to walk in long robes ( ἐν στολαῖς). The στόλη was a rich robe which reached down to the ankles, and was adorned with fringes. The scribes took pleasure in this kind of display. The salient points in their character were ostentation, avarice, and religious hypocrisy.