God sent an angel to Jerusalem to destroy it: and as he was about to destroy, Yahweh saw, and he repented him of the evil, and said to the destroying angel, It is enough; now stay your hand. The angel of Yahweh was standing by the threshing floor of Ornan the Jebusite.
"The version of the incident in the Book of 2 Samuel [1 Chronicles 24:1] gives an underlying theological perspective, while the Chronicler simply describes what happened from a human perspective." [Note: The NET Bible note on 21:1.] 