41 Now while the Pharisees were gathered together, Jesus asked them this question: 42 "What do you think of the Messiah? Whose son is he?" They said to him, "The son of David." 43 He said to them, "How is it then that David by the Spirit calls him Lord, saying, 44 "The Lord said to my Lord, "Sit at my right hand, until I put your enemies under your feet" '? 45 If David thus calls him Lord, how can he be his son?" 46 No one was able to give him an answer, nor from that day did anyone dare to ask him any more questions.
Matthew Henry's Commentary on Matthew 22:41-46
Commentary on Matthew 22:41-46
(Read Matthew 22:41-46)
When Christ baffled his enemies, he asked what thoughts they had of the promised Messiah? How he could be the Son of David and yet his Lord? He quotes Psalm 110:1. If the Christ was to be a mere man, who would not exist till many ages after David's death, how could his forefather call him Lord? The Pharisees could not answer it. Nor can any solve the difficulty except he allows the Messiah to be the Son of God, and David's Lord equally with the Father. He took upon him human nature, and so became God manifested in the flesh; in this sense he is the Son of man and the Son of David. It behoves us above all things seriously to inquire, "What think we of Christ?" Is he altogether glorious in our eyes, and precious to our hearts? May Christ be our joy, our confidence, our all. May we daily be made more like to him, and more devoted to his service.