John 5:27
And He gave His Son authority to carry out judgment [upon mankind] because He is the Son of man [Note: The Greek actually says "a son of man"].
Romans 13:4
For they are servants of God for your good. But you should be afraid if you do what is evil, because they do not carry the sword [i.e., for executing criminals] for nothing. For they are servants of God who take revenge [on wrongdoing] by punishing the person who does evil.
Jude 1:15
to bring judgment upon all [such people], and to convict every person of their ungodly behavior, which they have wickedly committed, and of all the evil things that [such] ungodly sinners have spoken against God."