1 Kings 18:17

Now you say, ‘Go, tell your lord, “Behold, Elijah is here”.’ He will kill me.”

Elijah said, “As the LORD of Armies lives, before whom I stand, I will surely show myself to him today.”

So Obadiah went to meet Ahab, and told him; and Ahab went to meet Elijah.

He answered, “I have not troubled Israel, but you and your father’s house, in that you have forsaken the LORD’s commandments and you have followed the Baals.

Now therefore send, and gather to me all Israel to Mount Carmel, and four hundred fifty of the prophets of Baal, and four hundred of the prophets of the Asherah, who eat at Jezebel’s table.”

So Ahab sent to all the children of Israel, and gathered the prophets together to Mount Carmel.