Jeremiah 40:15-16

So Johanan went privately and approached Gedaliah, saying, “Please let me go and kill Ishmael son of Nethaniah, and no one will know who did it. Why should he assassinate you and scatter all the Israelites who have rallied around you? Why should the remnant of Judah perish?” But Gedaliah replied to Johanan, “This is an order; don’t do it! For what you say about Ishmael is not true.”