“The Lord swore to David a sure oath from which he will not turn back: ‘One of the sons of your body I will set on your throne'” (Psalm 132:11)

This psalm of ascent calls the Lord to remember His promise to David, that the Messiah would be born in his line. The psalmist wrote this for worshipers to sing as they climbed Zion’s hill, urging God to keep His promise to send the Anointed One. “Of your body” is an unusual phrase in the Hebrew, literally, “of the fruit of your womb.” Of course, David had no womb. But Mary did.