The Most Religious Candidate in 2020 Elections - Which Religion is Mayor Pete?

The most religious candidate in the 2020 elections is turning out to be Mayor Pete Buttigieg — who also happens to be the homosexual candidate. Buttigieg is in top running in Iowa and New Hampshire right now, and could be the Democrat choice for president. Why are Democrats like Hillary Clinton, Pete Buttigieg, and Barack Obama so much more familiar with the Bible, and likely to quote the Bible? In fact, quotations from the Bible are much more common among these candidates than they were from presidents serving in the 1830s and 1840s. Whence all this religious talk? What is this religion that finds a few proof texts here and there in the Bible? And, why do they feel so inclined to use the Bible?