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.
Romans 12:19
Do not take revenge on someone who has wronged you, but leave it up to God's wrath [to take care of it], for it is written [Deut. 22:35], "The Lord says, I will pay people back [for doing wrong] because taking revenge belongs to me."
1 Thessalonians 4:6
And none of you should violate and exploit his brother [or sister] in such a matter. For the Lord will punish people for all these things, just as we told you before and warned you.
Romans 13:6
This is the reason why you should pay taxes also. For the authorities are God's servants who continually tend to this matter [i.e., of collecting taxes].