Thematic Bible: The purpose of government

Submit, for the Lord's sake, to every authority set up by man, whether it be to the Emperor as supreme ruler, or to provincial Governors as sent by him for the punishment of evil-doers and the encouragement of those who do what is right.

Let every individual be obedient to those who rule over him; for no one is a ruler except by God's permission, and our present rulers have had their rank and power assigned to them by Him. Therefore the man who rebels against his ruler is resisting God's will; and those who thus resist will bring punishment upon themselves. For judges and magistrates are to be feared not by right-doers but by wrong-doers. You desire--do you not? --to have no reason to fear your ruler. Well, do the thing that is right, and then he will commend you. read more.
For he is God's servant for your benefit. But if you do what is wrong, be afraid. He does not wear the sword to no purpose: he is God's servant--an administrator to inflict punishment upon evil-doers. We must obey therefore, not only in order to escape punishment, but also for conscience' sake. Why, this is really the reason you pay taxes; for tax-gatherers are ministers of God, devoting their energies to this very work. Pay promptly to all men what is due to them: taxes to those to whom taxes are due, toll to those to whom toll is due, respect to those to whom respect is due, honour to those to whom honour is due.