Jeremiah 40:15 NIV

15 Then Johanan1 son of Kareah said privately to Gedaliah in Mizpah, "Let me go and kill2 Ishmael son of Nethaniah, and no one will know it. Why should he take your life and cause all the Jews who are gathered around you to be scattered3 and the remnant4 of Judah to perish?"

References for Jeremiah 40:15