1 Kings 11:14-17

14Then the Lord raised up an adversary to Solomon, Hadad the Edomite; he was of the 1royal line in Edom.

15For it came about, 2when David was in Edom, and Joab the commander of the army had gone up to bury the slain, and had 3struck down every male in Edom

16(for Joab and all Israel stayed there six months, until he had cut off every male in Edom),

17that Hadad fled 4to Egypt, he and certain Edomites of his father’s servants with him, while Hadad was a young boy.