During the reign of the evil King Ahab, some of the Israelites began to abandon their God. They started worshiping another god, called Baal. So Elijah, a prophet of God, challenged Ahab and the 450 prophets of Baal. He had them meet him on a mountain in the presence of the people of Israel.
Elijah had a bull killed and put it on an altar to sacrifice it to God, but didn’t set it on fire. The prophets of Baal did the same for their god. The prophets kept calling to Baal all day, asking him to prove his existence by setting his bull on fire himself, but Baal didn’t respond. Elijah suggested shouting louder, in case Baal was asleep or something, but that didn’t help.
Elijah then had his bull and firewood drenched with four large jars of water three times. Then he prayed to his God. God immediately answered, sending fire from heaven to burn up the bull, the firewood, the alter, and the water. All the people were convinced that this was the one true God. So they helped Elijah round up all the prophets of Baal so he could murder them.
The moral of the story
Only worship gods that can demonstrate their existence by performing unambiguous miracles on command.