After all they are appointed by God Himself. This is truly part of the overall context of prophecy, and is consistently treated that way

“1 Let every soul be in subjection to the higher authorities, for there is no authority except from God, and those who exist are ordained by God. 2 Therefore he who resists the authority, withstands the ordinance of God; and those who withstand will receive to themselves judgment.”
Rom 13:1-2

Paul goes on to say that these are, overall,
powers for good.

If you do not want to be afraid of the governing authorities, then do what is right, Rom 13:3

“for he is a servant of God to you for good. But if you do that which is evil, be afraid, for he doesn’t bear the sword in vain; for he is a minister of God, an avenger for wrath to him who does evil.”
Rom 13:4

“Servant” or “minister” here is diakonos, literally “deacon.” So some “ministers of God” carry weapons. Part of the context is the last part of chapter 12, where we are taught to NOT be involved in personal revenge.

“Don’t seek revenge yourselves, beloved, but give place to God’s wrath. For it is written, “Vengeance belongs to me; I will repay, says the Lord.””
Rom 12:19

So how does GOD take revenge on evil doers? Well part of it is through the civil authorities. Instead of personal revenge, we should wait until the police show up.

“For this reason you also pay taxes, for they are ministers of God’s service, attending continually on this very thing.”
Rom 13:6

This is God’s plan for our societies.

Does this mean the government is always right and good?

By no means! They are men who have been appointed to a certain role in society, and will be judged by how well they fulfill their role, as also we will. Some human examples might be useful.

For instance we have bosses at work, and often we are the “servants.” Sometimes this is very literal. For instance if we are “serving tables,” acting as a waiter.

“Servants, obey in all things those who are your masters according to the flesh, not just when they are looking, as men-pleasers, but in singleness of heart, fearing God.”
Col 3:22

Does this mean the boss is always right? By no means, but he is still the boss. We should try to help him if we can, but it would be out of line for us to “take over,” or “take him out.”

If rulers are completely out of line, we should
politely decline to obey, and accept
the consequences.

Peter is a good example in Acts 5.

“But Peter and the apostles answered, “We must obey God rather than men.”
Acts 5:29

Another example is the soldiers declining to murder the priests at the order of the now evil ruler, King Saul, 1Sam 22:17. Kings and judges are warned to serve Christ with fear and trembling, lest He personally take them out! Psa 2:10-12. And it happens every day!

Scriptures are from the World English Bible WEB, a copyright free revision
of the original ASV American Standard Version 1901.