1 Kings 11:15-17

Thomson(i) 15 and in the general extirpation which David made of Edom, when Joab the captain general of the army went to bury the dead after the general slaughter of the males in Idumea 16 [for Joab and all Israel continued there six months till they cut off all the males in Idumea] 17 Ader with all the principal Idumeans of the servants of his father fled and went to Egypt. Ader was then but a child;