Jeremiah 40:13-16

13Moreover Johanan the son of Kareah and all the captains of the forces that were in the fields came to Gedaliah at Mizpah,

14and said to him, “Do you certainly know that Baalis the king of the Ammonites has sent Ishmael the son of Nethaniah to murder you?” But Gedaliah the son of Ahikam did not believe them.

15Then Johanan the son of Kareah spoke secretly to Gedaliah in Mizpah, saying, “Let me go, please, and I will kill Ishmael the son of Nethaniah, and no one will know it. Why should he murder you, so that all the Jews who are gathered to you would be scattered, and the remnant in Judah perish?”

16But Gedaliah the son of Ahikam said to Johanan the son of Kareah, “You shall not do this thing, for you speak falsely concerning Ishmael.”