'Wheat' in the Bible

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

Ornan said to David, "Take it for yourself, and let my lord the king do that which is good in his eyes. Behold, I give the oxen for burnt offerings, and the threshing instruments for wood, and the wheat for the meal offering. I give it all."