1 Chronicles 21:18-20

21st Century King James Version

¹⁸ Then the angel of the Lord commanded Gad to say to David that David should go up and set up an altar unto the Lord on the threshing floor of Ornan the Jebusite.

¹⁹ And David went up at the saying of Gad, which he spoke in the name of the Lord.

²⁰ And Ornan turned back and saw the angel, and his four sons with him hid themselves. Now Ornan was threshing wheat.