Eight years ago, conservative Christians wondered if Donald J. Trump, who had just been elected president, would truly be their champion. They were weary, and angry, after wandering in the wilderness of the Obama years when liberal values seemed ascendant and they felt powerless.

Mr. Trump delivered. A promise to “my beautiful Christians” came true even after he left office, when the U.S. Supreme Court overturned Roe v. Wade, the constitutional right to abortion.

Now, as Mr. Trump’s sweeping re-election victory brings them to new heights of power, they believe his return is more than an electoral mandate: they believe it is a divine one.

Mr. Trump has repeatedly invoked a religious anointing since he survived an assassination attempt in July. And when he claimed victory on Tuesday night, he did so again.

“Many people have told me that God spared my life for a reason,” Mr. Trump told supporters. “And that reason was to save our country and to restore America to greatness.”

It is a remarkable claim for a president who claimed to be a “dictator” — if only on Day 1.

While politicians have often invoked God or cited passages from the Bible to make their case, the country is entering a new landscape, one where Mr. Trump is not only the leader of the Republican Party but also the de facto figurehead of conservative American Christianity.