When all the people saw what happened, they fell on their faces and said, "JehovahHe is God! JehovahHe is God!" (v. 39).
Elijah commanded the people to seize the prophets of Baal, letting no one escape. Then he brought them down to the brook Kishon and slaughtered them there (v. 40).
By this, Elijah won the case, and Ahab and all the false prophets lost the battle.
Elijah told Ahab that rain was coming, saying to him, "Go up; eat and drink, for there is the sound of an abundance of rain" (v. 41). After telling Ahab this, Elijah went up to the top of Carmel and prayed until a great downpour of rain came from the heavens (vv. 42-45; James 5:18).
First Kings 18:46 tells us that the hand of Jehovah (referring to the Spirit of Jehovah) was upon Elijah and that he girded up his loins and ran before Ahab to the entrance of Jezreel.