2 Samuel 17:25-29

Absalom put Amasa in command of the army instead of Joab. Now Amasa was the son of a man named Ithra the Israelite, who had married Abigail the daughter of Nahash, [the half sister of David and] the sister of Zeruiah, Joab’s mother. So Israel and Absalom camped in the land of Gilead. When David came to Mahanaim, Shobi the son of Nahash from Rabbah of the Ammonites, and Machir the son of Ammiel from Lo-debar, and Barzillai the Gileadite from Rogelim brought beds, basins, pottery, wheat, barley, flour, roasted grain, broad beans, lentils, and [other] roasted grain, honey, cream, sheep, and cheese of the herd, for David and the people who were with him, to eat; for they said, “The people are hungry and weary and thirsty in the wilderness.”