And David himself saith in the book Psalms,.... In Psa 110:1 the Lord said to my Lord, sit thou on my right hand; which words were delivered by David, as inspired by the Spirit of God; and contain a speech of God the Father to his son Jesus Christ, upon his ascension to heaven, after his sufferings, death, and resurrection from the dead; when he was bid to sit down in human nature, at the right hand of God, in token of having done his work on earth to full satisfaction; and in the relation of which David calls Christ his Lord; and is the reason of their being mentioned.