'Rulers' in the Bible

For I am persuaded that not even death or life,angels or rulers,things present or things to come, hostile powers,

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.

For rulers are not a terror to good works, but to the evil. Wilt thou then not be afraid of the power? do that which is good, and thou shalt have praise of the same:

This is also why you pay taxes. For rulers are God's servants faithfully devoting themselves to their work.