Many Americans appear ready to give President Donald Trump a pass when it comes to his lack of religious knowledge, sensibilities or behavior, but I think that’s a mistake.

Trump is quite pious and his religious convictions run dangerously deep. But his piety is not a reflection of a Christian faith. His piety is formed by his understanding of what makes America a country like no other.

Trump proclaimed Jan. 20, the day of his inauguration, a “National Day of Patriotic Devotion.” Patriotic devotion? Christians are devoted to God, not to any nation. Trump defended his call for a day of patriotic devotion by drawing attention to his other claim – taken on faith – that there are no greater people than American citizens. Faith in Trump’s view, though, requires belief in those things for which we have insufficient evidence.

There is nothing, in Trump’s view, the American people cannot accomplish as long as we believe in ourselves and our country. But Christians do not believe in ourselves or our country. We believe in God, but we do more than believe in God. We worship God. Nothing else is to be worshiped.

Christians have a word to describe the worship of that which is not God: idolatry. Idolatry, of course, can be a quite impressive form of devotion. The only difficulty is idolaters usually end up killing someone for calling into question their “god.”

Trump’s inauguration address counts as a stunning example of idolatry. His statement – “At the bedrock of our politics will be a total allegiance to the United States of America and through our loyalty to our country we will recover loyalty to each other” – is clearly a theological claim that offers a kind of salvation.

Christians believe that only God demands “total allegiance.” Otherwise we run the risk, as Trump exemplifies, of making an idol out of some human enterprise.

The evangelistic character of Trump’s faith should not be missed. He suggests that we will rediscover our loyalty to one another through our total allegiance to the United States. Quoting the Bible, he even suggests we will learn to live together in unity.

But history tells us people experience repressive politics for challenging such “oneness.” It is difficult to imagine those who have faced slavery and genocide can be in solidarity with those who believe we can let bygones be bygones.

Consider Trump’s use of the phrase “the people” in his inaugural address. “The people” have borne the cost. “The people” now own, rule and control the government. “The people” have not shared in the wealth of the country but now they will. “The people” will have their jobs restored.

To which one can only wonder: Who are these people? The answer must be that they are Trump’s people who now wait for his call to action, that is, to make America great again. Trump, in his mind, is not just the president of the United States. He is the savior.

Trump identifies as a Presbyterian. However, he has said he does not need a prayer for confession of sins because he has done nothing that requires forgiveness, one signal that he does not believe in a basic Christian tenet. He has identified with Norman Vincent Peale, who wrote the book “The Power of Positive Thinking,” which does not represent Christian orthodoxy. Christianity in Peale’s hands was closer to a set of beliefs a follower could make up to suit their desires. Trump has adopted this strategy and applied it to the country.

Christians must call his profound and mistaken faith what it is: idolatry. Christianity in America is declining if not dying, which makes it difficult to call Trump to task. Trump has taken advantage of Christian Americans who have long lived as if God and country are joined at the hip. I do not doubt Trump thinks of himself as a Christian, but America is his church.

Christians have a church made up of people from around the globe. That global interconnectedness might just produce a people with the resources to tell Trump “no.” At the very least, Christians in the United States have little to lose by beginning to reject our long love affair with American pretension.

Hauerwas’ most recent book is “The Work of Theology” (Eerdmans). He is retired from the Divinity School of Duke University. Most recently he was chair in ethics at the University of Aberdeen (Scotland).