We must also understand that vengeance and administration of justice are not the roles of private individuals. "Vengeance is Mine, and retribution, In due time their foot will slip; For the day of their calamity is near, And the impending things are hastening upon them." (Deuteronomy 32: 35, NASB). This point is also repeated in Romans 12 and Hebrews 10 in the New Testament. Civil government is authorized in certain instances to administer justice, as Romans 13 indicates. Jesus Christ Himself stated that there is a role for government in society, "render unto Caesar" in Matthew 22:21 and Mark 12:17.
Why do you call the killing of this murderer a murder. I gave you my definition earlier and asked you to explain why this was a murder.