1 Kings 18:21

18 And he said: I have not troubled Israel, but thou and thy father's house, who have forsaken the commandments of the Lord, and have followed Baalim.

19 Nevertheless send now, and gather unto me all Israel, unto Mount Carmel, and the prophets of Baal four hundred and fifty, and the prophets of the groves four hundred, who eat at Jezabel's table.

20 Achab sent to all the children of Israel, and gathered together the prophets unto mount Carmel.

21 And Elias coming to all the people, said: How long do you halt between two sides? If the Lord be God, follow him: but if Baal, then follow him. And the people did not answer him a word.

22 And Elias said again to the people: I only remain a prophet of the Lord: but the prophets of Baal are four hundred and fifty men.

23 Let two bullocks be given us, and let them choose one bullock for themselves, and cut it in pieces, and lay it upon wood, but put no fire under: and I will dress the other bullock, and lay it on wood, and put no fire under it.

24 Call ye on the names of your gods, and I will call on the name of my Lord: and the God that shall answer by fire, let him be God. And all the people answering, said: A very good proposal.