Elijah ran from Mount Carmel to the city of Jezreel because he was pursued by Ahab the king. This incident is described in 1 King 18-19, where Elijah, after confronting the prophets of Baal on Mount Carmel, hears that Ahab's wife, Jezebel, intends to kill him. Fearing for his life, Elijah flees from Jezreel.