We do not dwell as often as we should on perhaps the most ironic phenomenon in American life. Namely, we live in a constitutional order that guarantees freedom of conscience, thereby relegating faith to a private concern. And yet the question of faith can effectively dictate political identities. For instance, a series of survey-based graphs posted Sunday to the social media platform X revealed that 73 percent of young, white, non-Hispanic men and women who identify as “Strong Republicans” never doubt that God exists, compared to only 7 percent of “Strong Democrats” who fit the same description — results that...