The prophet appears again (1 Kings 20:22-20:22)

“Then the prophet approached the king of Israel. He said to him. ‘Come, strengthen yourself. Consider well what you have to do. In the spring the king of Aram will come up against you.’”

This unnamed prophet showed up again to warn King Ahab that he should be ready for a spring attack from King Ben-hadad of Aram. He wanted him to make plans and figure out what to do.