I see the confusion of politics and religion as one of the greatest barriers to grace. C. S. Lewis observed that almost all crimes of Christian history have come about when religion is confused with politics. Politics, which always runs by the rules of ungrace, allures us to trade away grace for power, a temptation the church has often been unable to resist.
Those of us who live under the strict separation of church and state may not fully appreciate how historically rare that arrangement is … Baptists, Puritans, Quakers, and other splinter groups had made the long voyage to America in hopes of finding a place that did separate church and state, for they had all been victims of state-sponsored religious persecution. When the church joined with the state, it tended to wield power rather than dispense grace. – Philip Yancey, What’s So Amazing about Grace?