The Pharisees claimed to believe the word of God. They had attached many traditions to their beliefs and practices; and probably due to this had become blind to who Jesus was and is.
Jesus asks the Pharisees a question they cannot answer. In the following verses there is only one answer you can reach as to the identity of Jesus the Messiah/Christ.
“While the Pharisees were gathered together, Jesus asked them, saying, ‘What think ye of Christ? Whose Son is He?’ They say unto him, ‘The Son of David’. He saith unto them, ‘How then doth David in spirit call Him Lord, saying, ‘The LORD said unto my Lord, Sit Thou on My right hand, till I make Thine enemies Thy footstool? If David then call Him Lord, how is He his Son? And no man was able to answer Him a word, neither durst any man from that day forth ask Him any more questions.” Matthew 22:41-46 (KJB)
To give a good teaching on this I want to share with you from the Preacher’s Homiletical Commentary on Matthew 22:41-45:
“Mat_22:41-45. David’s Son and David’s Lord.—1. As it is good to be zealous of the law, so it is necessary to know the Messiah, who redeemeth men from the curse of the law. So our Lord, having answered the Pharisees’ question about the law, asketh them, “What think ye of Christ?” 2. Christ is a very man, lineally descended of David, for He is David’s Son; so say even the Pharisees. 3. Christ is also very God, for He is David’s Lord, equal with the Father. 4. The Son of David and David’s Lord, distinguished from the Father, as one of the persons of the Godhead, is but one person; for David’s God and David’s Son is here spoken of as one person. 5. Christ is fellow-partner of Divine glory with the Father, for “Sit Thou at My right hand” saith the Father. 6. Christ shall not want enemies who shall oppose His kingdom. 7. Christ’s enemies shall be put under His power. 8. There is but one Divine power of the Son and Father, for as the Son reigneth in majesty over His enemies, so the Father putteth them down also; for “Sit Thou till I put them down” is “Reign Thou” till this be done. 9. None can reconcile the speeches in Scripture concerning Christ, except he who believeth and acknowledgeth Him to be God and man in one person; for if David call Him Lord, how is He then his Son? hath no answer but He is both God and man.—David Dickson.” From The Preacher’s Complete Homiletical Commentary.
We must come to the place such as Peter in Matthew 16 when Jesus asked the question, “Who do you say that I am?” and Peter’s answer “You are the Christ the Son of the Living God.” (Matthew 16:13-19).
He is the God-Man. Fully God, and fully Man.
Repent of yours sins. Call on His name. Believe Him.