Why has God ordained government? (Ro 13:1) What is its purpose and role?
Asked another way, if people were basically good, loving one another as themselves, what need would there be for a State, rulers forcing us to comply with its laws? In that kind of world, what could government do more effectively than voluntary cooperatives, charities and businesses? Not much, if anything.
But unfortunately, we don’t live in that kind of world yet, so for now God commissions rulers to punish evildoers. (Ro 13:4) This requires officials to use force, to have an army and police … which costs money, so we must pay them to do it. (Mt 22:21)
Authority to forcibly collect money is easily corrupted, and the more government is allowed to do, and the bigger it gets, and the more money it requires, and the more influential and powerful it becomes, the more evil people will find ways to harness it for destructive ends.
To be healthy, government must be limited to the role God’s given it, and its powers divided and balanced to limit the effects of corruption. Outside a divine theocracy, this is the model I think Scripture recommends: limited government with separation of powers. In the only government God has ever established, Levites were His judges, keepers and interpreters of His law (De 17:9), while city elders and governors enforced compliance to it. (De 22:19-19) Levites had no power in themselves to collect money or create law, and no one in society had authority to violate God’s Law. (Ro 13:3)
The focus of government should be to protect people, punish evildoers, and praise those who do good. (1Pe 2:14) Let people do the rest voluntarily and cooperatively as they see fit. The closer to this model we can get, the better our government will be.