The term “Christian nationalism” means different things to different people. John Stackhouse defines nationalism as “love of one’s nation, identification with it, and special concern for its well-being” and sees nothing wrong with it from a Christian point of view. But this is not the normal way the term is used today. Rather, it means an ideology that seeks political power in order to merge Christian identity with national identity. In other words, it means Christians seeking to impose Christian values on all citizens of a nation by the force of law.
That’s not as bad as it may sound at first glance. Everyone thinks some values should be imposed for society to function – for example, human rights, private property, democracy. In one sense, there’s nothing unusual about Christians wanting their values to become law. Everyone – Muslim, Secular, pluralist – wants the law to reflect their values. How could anyone have values and not want their nation’s laws and policies to reflect them?
But for Christians, there’s a catch. “Christian values” include not forcing people to live Christian lifestyles who do not identify as Christian. Christian values are founded on the teaching and example of Jesus, and he was never coercive. He aimed at people’s hearts, seeking willing rather than coerced obedience. His goal was that people should follow him and live by his teachings because they wanted to more than anything else in the world, not because they would be imprisoned or disadvantaged if they don’t. The gospel is an invitation to the most rewarding and fulfilling life imaginable, not an executive order to be obeyed out of fear.
Jesus explicitly taught that Christian politics should be different to anything else the world has ever seen:
“The rulers of the nations lord it over them, and their high officials exercise authority over them. Not so with you. Instead, whoever wants to become great among you must be your servant.”
With these words (recorded in the gospel of Matthew), Jesus set a political agenda for his followers radically different to that of every other movement, religion, institution, or nation. Where others have always used power to dominate, control, and coerce obedience, Christians are to use power to serve those under them and to pursue their flourishing. With his own life Jesus showed what this looks like. The Jews expected the messiah to be a great military leader who would rally an army under his banner, shake off the Roman oppression, establish Israel as a nation, and rule it with absolute power and authority. Instead, rather than commit any violence, he submitted to death at the hands of the Roman oppressors.
Jesus did not mean that his followers should not seek power and influence in the world, or that they should lie down and let themselves be trampled on like a doormat. The “Christian difference” is not to be non-political, withdrawn from all engagement in worldly affairs as if God did not care what happens in the world. No: the Christian difference is twofold: (1) never to seize or maintain power through violence, coercion, lies, manipulation, or any means that supposedly justifies the ends, and (2) to use power (when we are freely and willingly given it) in service to everyone regardless of their belief or lifestyle, especially the powerless.