What does 1 Kings 18:16 mean?

Wasn’t it told my lord what I did when Jezebel killed Yahweh’s prophets, how I hid one hundred men of Yahweh’s prophets with fifty to a cave, and fed them with bread and water?

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

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

When Ahab saw Elijah, Ahab said to him, “Is that you, you troubler of Israel?”

He answered, “I have not troubled Israel; but you, and your father’s house, in that you have forsaken Yahweh’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.”