NET

15 Then Johanan son of Kareah spoke privately to Gedaliah there at Mizpah, “Let me go and kill Ishmael the son of Nethaniah before anyone knows about it. Otherwise he will kill you and all the Judeans who have rallied around you will be scattered. Then what remains of Judah will disappear.”

Darby

15 And Johanan the son of Kareah spoke to Gedaliah in Mizpah secretly, saying, Let me go, I pray thee, and I will smite Ishmael the son of Nethaniah and no man shall know it: why should he take thy life, and all they of Judah who are gathered unto thee be scattered, and the remnant of Judah perish?

KJV

15 Then Johanan the son of Kareah spake to Gedaliah in Mizpah secretly, saying, Let me go, I pray thee, and I will slay Ishmael the son of Nethaniah, and no man shall know [it]: wherefore should he slay thee, that all the Jews which are gathered unto thee should be scattered, and the remnant in Judah perish?