“Whenever political leaders cloak power in sacred language, or religious leaders publicly denounce political violence, they reenact debates that stretch back more than a millennium. These struggles are not symbolic: They concern who holds ultimate authority over people, souls – and in the end, history itself.”
https://theconversation.com/trumps-clash-with-the-pope-reenacts-a-1-000-year-old-question-what-happens-when-sacred-and-secular-power-collide-280548