Divine will with human hand; Lord of David from David’s seed

“I will; be cleansed.” You will marvel in these at Christ working both divinely and bodily together: divine, then, is the willing, but human the stretching out of the hand; so there is one Son from both. For even if the Word became flesh, yet as God he works with his own flesh, which has the power through him.

“And he said to them: How do they say the Christ is David’s son? For David himself says in the book of Psalms: The Lord said to my Lord: Sit at my right until I put your enemies as a footstool of your feet. David therefore calls him Lord, and how is he his son?” You hear how in these Christ himself tries to show that even if the Word became from David’s seed according to the flesh, yet even so he is by nature Lord, as Son and God. For if, he says, he is David’s son, how does David name him Lord? But he neither denies in these the birth from David’s seed according to flesh, nor dismisses being Lord by nature himself; rather he says both are present, even if from both he wills the one to be shown. So there is truly one Christ and Son.