14 Then the Lord raised up an adversary against Solomon, Hadad the Edomite; he was of the royal house in Edom. 15 For when David was in Edom, and Joab the commander of the army went up to bury the dead, he killed every male in Edom 16 (for Joab and all Israel remained there six months, until he had eliminated every male in Edom);
Matthew Henry's Commentary on 1 Kings 11:14-16
Commentary on 1 Kings 11:14-25
(Read 1 Kings 11:14-25)
While Solomon kept close to God and to his duty, there was no enemy to give him uneasiness; but here we have an account of two. If against us, he can make us fear even the least, and the very grasshopper shall be a burden. Though they were moved by principles of ambition or revenge, God used them to correct Solomon.