The separation of church and state is taken for granted in the current West, but this sort of division between a person’s religious beliefs and his or her public persona finds no place in the biblical worldview. So how are Christians supposed to think about their relationship with their country?
The key is to recognize the difference between one’s identity and one’s vocation. The Christian’s identity should only and always be in Jesus – no other loyalties must be allowed to compete with or claim equality with the Christian’s citizenship in heaven. However, out of all the vocations a Christian is called to by God, the particular country he or she is an earthly citizen of is one of the most important.
Christians are to take their calling to love their neighbors as themselves seriously. Because of this, God’s mission to rescue his world through Jesus must always inform how Christians act, vote, and serve.