1 Kings 22:18

And the king of Israel said unto Jehoshaphat, Did I not tell thee that he would prophesy no good concerning me, but evil?

Ahab knew that Micaiah consistently foretold judgment and calamity for him rather than success and good. He resented the prophet for it, treating truthful warning as personal hostility. Micaiah's warning that Israel would be scattered without a leader made clear to the kings that their campaign lacked God's approval. They ignored the warning and went ahead, and Ahab died in battle, fulfilling it. Such hostility shows how people whose lives conflict with a warning may reject both the messenger and the light that exposes their wrongdoing.