1 Chronicles 21:16-19

16David lifted up his eyes and saw the angel of Adonai standing between the earth and the heaven with a drawn sword in his hand stretched out over Jerusalem. Then David and the elders, clothed in sackcloth, fell on their faces.

17David said to God, “Was it not I who commanded to count the people? I alone am the one who sinned and behaved wickedly. But these sheep, what have they done? Please let Your hand, Adonai my God, be against me and against my father’s house, but do not let the plague be on Your people.”

18So the angel of Adonai told Gad to instruct David that David should go up and build an altar to Adonai on the threshing floor of Ornan the Jebusite.

19So David went up by the word of Gad, which he spoke in the Name of Adonai.