“For he is God’s servant to do you good. But if you do wrong, be afraid, for he does not bear the sword for nothing. He is God’s servant, an agent of wrath to bring punishment on the wrongdoer. Therefore, it is necessary to submit to the authorities, not only because of possible punishment but also because of conscience. This is also why you pay taxes, for the authorities are God’s servants, who give their full time to governing.” (Romans 13:4-6)
Does this mean that the rulers are voluntarily in service to God? No. Does this mean that the rulers are godly? No again. God has inanimate objects as his servants (Psalm 104:4; 148:8), which does not imply any type of piety on their part. God can raise up rulers, even evil ones, and use them for his purposes.
God has “ordered” the powers, putting limits on what they can do. He can use them when they serve his ends. When they are being used by God, man is not to oppose them, but is to submit to them.