King David in the Old Testament is a good example. He was a Christian even thouth the term "Christian" wasn't around yet. How do we know? David said in Psalm 110:1:
The LORD says to my lord: “Sit at my right hand until I make your enemies a footstool for your feet.”
David's Lord was Jesus, being talked to by the Father. The point is that David became the leader of God's people. His fame spread throughout the known world. He was a prophet and the top political leader at the same time.
Christians of today must maintain their Christianity. If they do, they have the right and duty to pick up their power. But ig they don't pick it up, they will be held guiltless by God, even if their position in Heaven isn't as great as it could have been. Where is the Christian's power?
Matthew 7:7-12 Jesus said:
7“Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. 8For everyone who asks receives; the one who seeks finds; and to the one who knocks, the door will be opened.
9“Which of you, if your son asks for bread, will give him a stone? 10Or if he asks for a fish, will give him a snake? 11If you, then, though you are evil, know how to give good gifts to your children, how much more will your Father in heaven give good gifts to those who ask him! 12So in everything, do to others what you would have them do to you, for this sums up the Law and the Prophets.
Guess who are doing this that Jesus spoke in politics? The crooks and criminals in politics, that's who.
This speech is taken from the Sermon on the Mount, where Jesus is speaking to believers and unbeliever, although it is assumed that most of them are believers. But check verse 8. Jesus says "everyone," not only believers. So, when evil unbelievers ask, they will receive, just like evil believers. Check verse 11, Jesus calls them all evil, making no distinction between the believers and the unbelievers. All are evil.
Saint Paul and others tell us that God is not a respecter of persons. God punishes the wicked for their wickedness, and rewards the believers for the good they do. But He gives to all what they ask for.
You Christians. Get into politics and straighten the world out. If you don't, you will be punished for not doing the good you could have done. You have just as much power to ask and receive good things as the wicked unbelievers have to ask and receive bad things for the world.