Christians and Politics, Take One--Separatism
I want to just examine briefly a few of the reasons Christians should be involved in politics. I have no illusions of going down every rabbit trail in a brief post, but hope to touch on a few highlights.
First, and most obviously--all of life is ethical. Paul writes in II Cor. 10:5 that, "We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ." Moreover, as Christians we are to do all things for God's glory (II Cor. 10:31). As believers, we are to shine the light of truth into dark corners, wherever that may take us. The Bible is given to us primarily to reveal God in His glory and to lead us to faith. But the Word also speaks to politics, economics, and culture. There is no neutrality. Jesus tells us that we are either with Him or against Him, and that applies to politics as well as every other area of life. Christ has all authority, and has a claim on our loyalty.
Secondly, whether they realize it or not, Christians who counsel cultural and political disengagement are in reality preaching a Gnostic gospel. Frequently these well-intentioned folks will create an artificial distinction between "spiritual" and "secular" realms. In arguing that the material world is essentially evil, they are closer to being neo-Platonists than Christians.
As God's people we are called to be salt and light to a dying and dark world (Matt. 5:13-16). Moreover, God affirms that the creation itself is good (Gen. 1:31) and that it is sin that causes the creation to groan. Our duty as God's stewards is to not only spread the Gospel and make disciples, but to work at the restoration of His creation. When the New Testament speaks of salvation, it is talking about an act of the Messiah. It means more than just rescuing a few blighted souls from the darkness of eternal punishment, it speaks to an ethical transformation that impacts every area of life--including politics.