Deuteronomy 19:6

6lest athe avenger of blood in hot anger pursue the manslayer and overtake him, because the way is long, and strike him fatally, though the man did not deserve to die, since he had not hated his neighbor in the past.

Jeremiah 40:15

15Then Johanan the son of Kareah spoke secretly to Gedaliah at Mizpah, “Please let me go and strike down Ishmael the son of Nethaniah, and no one will know it. Why should he take your life, so that all the Judeans who are gathered about you would be scattered, band the remnant of Judah would perish?”
Copyright information for ESV