The New John Gill Exposition of the Entire Bible2 Chronicles 18:1
Now Jehoshaphat had riches and honour in abundance…
Still more and more, see (2 Chronicles 17:5) , and which moved Ahab to desire
friendship and affinity with him, to which Jehoshaphat agreed:
and joined affinity with Ahab;
king of Israel, married his son Joram
to Athaliah, a daughter of Ahab by Jezebel of Zidon; which marriage
proved of bad consequence to Jehoshaphat and his family.