2 Kings 10:24-25

24Then they went in to offer sacrifices and burnt offerings. Now Jehu had stationed eighty men outside for himself and said, “If any of the men whom I have brought into your hands escape, the one who lets him go shall forfeit his own life for that man’s life.”

25Then it came about, as soon as he had finished offering the burnt offering, that Jehu said to the guards and to the royal officers, “Go in and kill them; let no one come out.” And they killed them with the edge of the sword; and the guard and the royal officers threw their bodies out, and went to the inner room of the house of Baal.