en_tn/2ch/18/01.md

Now Jehoshaphat had great riches and honor; he allied himself with Ahab

The word "now" is used here to mark background information. This happened before Ahab went down to Samaria. (See: rc://en/ta/man/jit/writing-background)

he allied himself with Ahab

"he aligned himself with Ahab" or "he made himself a friend of Ahab"