Riding Roller Coasters Years ago, while preparing to preach about Pentecost, a holiday that at the time I knew nothing about, I discovered that one of my Unitarian Universalist colleagues had once been a Pentecostal minister. Pentecost and Pentecostal must be related, I figured, so I asked him to explain what this holiday was. He didn’t answer directly. Instead, he told me about an amusement park in the town where he grew up. The park was famous for its roller coasters. When he’d been a boy, they had this old wooden one. The train would chug along, inching up the slope, painfully cresting the hill, and then dash down the…