1 Kings 11:16 in the King James Version
(For six months did Joab remain there with all Israel, until he had cut off every male in Edom:)
Context
15 For when David was in Edom, and Joab the captain of the army had gone up to bury the slain, and had struck every male in Edom
16 (for Joab and all Israel remained there six months, until he had cut off every male in Edom),
17 Hadad fled, he and certain Edomites of his father’s servants with him, to go into Egypt, when Hadad was still a little child.