15 and it cometh to pass, in David's being with Edom, in the going up of Joab head of the host to bury the slain, that he smiteth every male in Edom—

Matthew Henry's Commentary on 1 Kings 11:15

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.