Then the angel of Yahweh commanded Gad to tell David, that David should go up, and raise an altar to Yahweh in the threshing floor of Ornan the Jebusite.
"Here, by divine command, is to be the site of the temple. It is a gift not from Ornan but from God. The grace of God, in giving this to His people as the place where ark and altar are to be brought together, is a thing to be wondered at." [Note: Wilcock, p. 95.] 