Jeremiah 40:15-16

Then Johanan the son of Kareah spoke secretly to Gedaliah in Mizpah, saying, “Let me go and kill Ishmael the son of Nethaniah, and not a man will know! Why should he take your life, so that all the Jews who are gathered to you would be scattered and the remnant of Judah would perish?” But Gedaliah the son of Ahikam said to Johanan the son of Kareah, “Do not do this thing, for you are telling a lie about Ishmael.”