2 Samuel 24:16-18

16But as the angel was preparing to destroy Jerusalem, the Lord relented and said to the death angel, “Stop! That is enough!” At that moment the angel of the Lord was by the threshing floor of Araunah the Jebusite.

17When David saw the angel, he said to the Lord, “I am the one who has sinned and done wrong! But these people are as innocent as sheep—what have they done? Let your anger fall against me and my family.”

18That day Gad came to David and said to him, “Go up and build an altar to the Lord on the threshing floor of Araunah the Jebusite.”