Exposition of the Old and New Testament, by John Gill, [1746-63], at sacred-texts.com
2 Chronicles Chapter 18
Now Jehoshaphat had riches and honour in abundance,.... Still more and more, see Ch2 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.
And after certain years,.... Two years, according to the Syriac and Arabic versions, or in the third year after the affinity was contracted, see Kg1 22:2,
he went down to Ahab to Samaria; to pay him a visit upon the alliance, civil and matrimonial, contracted between them:
and Ahab killed sheep and oxen for him in abundance, and for the people that he had with him; entertained him and his retinue in a very grand and liberal manner:
and persuaded him to go up with him to Ramothgilead; from hence, to the end of the chapter, it is the same with Kg1 22:4.