1 Kings 20:40

Then the woman said, “Why then have you thought up such a thing against the people of God? For in speaking this word the king is as one who is guilty, in that the king does not bring back his banished one.

Then they came in to offer sacrifices and burnt offerings. Now Jehu had placed for himself eighty men outside, and he had said, “The one who permits any of the men whom I cause to come into your hands to escape, shall give up his life in exchange.”

“Cursed be the one who does the work of Yahweh with a slack hand, And cursed be the one who restrains his sword from blood.