2 Kings 10:23-24

23Then Jehu and Jehonadab the son of Rechab went into the temple of Baal, and said to the worshipers of Baal, “Search and see that no servants of the Lord are here with you, but only the worshipers of Baal.”

24So they went in to offer sacrifices and burnt offerings. Now Jehu had appointed for himself eighty men on the outside, and had said, “If any of the men whom I have brought into your hands escapes, whoever lets him escape, it shall be his life for the life of the other.”