Matthew 22:41-45

Now while the Pharisees were gathered together, Jesus asked them a question, saying, What think ye of the Christ? whose son is he? They say unto him, The son of David. He saith unto them, How then doth David in the Spirit call him Lord, saying, The Lord said unto my Lord, Sit thou on my right hand, Till I put thine enemies underneath thy feet? If David then calleth him Lord, how is he his son?