Only the second Roman Catholic to hold the nation’s highest office, President Joe Biden has been one of the most pious and faithfully observant Christians in decades, peppering his speeches with quotes from theologians such as St. Augustine and St. Francis of Assisi, and hymns like “On Eagle’s Wings.” Since the 1960s, liberal Christianity has endured a steady decline, even as conservative congregations around the United States were growing and flourishing. But the remnants of these once-powerful Christian traditions have in many ways sparked back to life over the past few years, including with the elections of President Biden, Sen. Raphael Warnock, and Rep. Cori Bush.