2 Kings 10:24-25

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.”

25Now it happened, as soon as he had made an end of offering the burnt offering, that Jehu said to the guard and to the captains, “Go in and kill them; let no one come out!” And they killed them with the edge of the sword; then the guards and the officers threw them out, and went into the inner room of the temple of Baal.