Mark 12:36 in the King James Version
For David himself said by the Holy Ghost, The LORD said to my Lord, Sit thou on my right hand, till I make thine enemies thy footstool.
Context
35 Jesus responded, as he taught in the temple, “How is it that the scribes say that the Christ is the son of David?
36 For David himself said in the Holy Spirit, ‘The Lord said to my Lord, “Sit at my right hand, until I make your enemies the footstool of your feet.”’
37 Therefore David himself calls him Lord, so how can he be his son?” The common people heard him gladly.