1 Chronicles 21:18-20

Darby Translation

¹⁸ And the angel of Jehovah commanded Gad to say to David, that David should go up and rear an altar to Jehovah in the threshing-floor of Ornan the Jebusite.

¹⁹ And David went up at the saying of Gad, which he had spoken in the name of Jehovah.

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