1 Chronicles 21:15-18

15Then God sent an angel to Jerusalem to destroy it, but when the angel was about to destroy the city, the Lord looked, relented concerning the destruction, and said to the angel who was destroying the people, “Enough, withdraw your hand now!” The angel of the Lord was then standing at the threshing floor of Ornan the Jebusite.

16When David looked up and saw the angel of the Lord standing between earth and heaven, with his drawn sword in his hand stretched out over Jerusalem, David and the elders, covered in sackcloth, fell facedown.

17David said to God, “Wasn’t I the one who gave the order to count the people? I am the one who has sinned and acted very wickedly. But these sheep, what have they done? Lord my God, please let your hand be against me and against my father’s family, but don’t let the plague be against your people.”

18So the angel of the Lord ordered Gad to tell David to go and set up an altar to the Lord on the threshing floor of Ornan the Jebusite.