“For David himself says in the book of Psalms, ‘The Lord said to my Lord, Sit you on my right hand, until I make your enemies the footstool of your feet.' ”
Jesus here took the Psalm to be Davidic, as His opponents did, and His argument was based on what David had said of the coming King in his psalm. In it he had declared that the coming King Who would sit at God's right hand until all His foes were subjected to Him, was also his (David's) Lord, One Who had demonstrated Himself to be superior to David. He thus foresaw a more exalted position for Him as sitting on God's right hand in the seat of divine power and authority, until all his foes submitted to Him and were subjected before Him.
We note here how once again Luke omits the reference to the Holy Spirit included by Mark. This non-reference to the Holy Spirit is his studied purpose in these final Chapter s of his Gospel, ready for the transformation that will take place at the commencement of Acts.