2 Chronicles 18:28
So the king of Israel and Jehoshaphat the king of Judah went up to Ramoth–gilead.
Cross-reference
2 Chronicles 19:2
Historical context
2 Chronicles 19:2 records Jehu's rebuke to Jehoshaphat for allying with Ahab — a direct consequence of the battle begun in 18:28.
1 Kings 22:29–33
Parallel
1 Kings 22:29-33 is the parallel account of the same battle, showing the events that follow from the decision to go up.