2 Samuel 24:16-18

16When the angel extended his hand to destroy Jerusalem, the Lord relented from his judgment. He told the angel who was killing the people, “That’s enough! Stop now!” (Now the Lord’s angel was near the threshing floor of Araunah the Jebusite.)

17When he saw the angel who was destroying the people, David said to the Lord, “Look, it is I who have sinned and done this evil thing! As for these sheep – what have they done? Attack me and my family.”

18So Gad went to David that day and told him, “Go up and build an altar for the Lord on the threshing floor of Araunah the Jebusite.”