The Story of Elijah, chapter 9

 King Ahab left the battlefield, victorious over the Syrians, but he arrived home moody and sullen. In theory, there’s no reason for kings to be “moody and sullen.” If they are troubled, they have counselors. If they feel sad, they have jesters. If they need comfort, the priest is always on call. Having the luxuries afforded them by wealth and power, one imagines they could avoid ever being moody and sullen.
Ahab may have assumed he did a good thing, releasing the enemy king who had attacked Israel, and sending him back to Syria with a slap on the wrist. But as he was riding through his troops with them congratulating him, there was suddenly that miserable prophet standing in his way, telling him God did not want King Ben-hadad to go free, and Ahab would pay for that wrong he did in releasing him. That spoiled everything.