2 Kings 10:24; 2 Kings 10:25

24 Then they went in to offer sacrifices and burnt offerings. Now Jehu had stationed for himself eighty men outside, and he had said, "The one who permits any of the men whom I bring into your hands to escape shall give up his life in exchange."

25 Then it came about, as soon as he had finished offering the burnt offering, that Jehu said to the guard and to the royal officers, "Go in, kill them; let none come out." And they killed them with the edge of the sword; and the guard and the royal officers threw them out, and went to the inner room of the house of Baal.