And after this did Jehoshaphat king of Judah join himself with Ahaziah king of Israel,.... Meaning, not after the invasion of the Moabites, &c. and the slaughter of them, but after Jehoshaphat returned from Ramothgilead, when he was reproved by a prophet for helping the ungodly, Ch2 19:1 so that it was a great aggravation of his folly and weakness, that after that, and quickly after that, he should join himself to a wicked prince, though not in war, but in trade; for so it must be, since Ahaziah reigned but two years, and those not complete, see Kg1 22:51, but is here related, that Jehoshaphat's weaknesses and blemishes might be laid together: who did very wickedly; that is, Ahaziah, who walked in the ways of Ahab his father, and of Jezebel his mother, and of Jeroboam the son of Nebat, Kg1 22:52.