John Wesley on 2 Chronicles 19:2

Therefore - Therefore God will chastise thee for this miscarriage. Which he did partly by stirring up the Moabites, and others to invade him, chap.20:1, partly by permitting his eldest son Jehoram to kill all his brethren, chap.21:4, and principally by bringing that almost general destruction upon his grand - children by Jehu, 2Kings 9:27 10:13,14, which was the fruit of his alliance with Ahab.