While most German church leaders gave in to Hitler, theologian and pastor Martin Niemöller was among the brave souls who resisted Nazi evil. I read a story describing how in the 1970s a group of older Germans stood outside a large hotel while what appeared to be a younger man bustled about with the group’s luggage. Someone asked who the group was. “German pastors,” came the answer. “And the younger man?” “That’s Martin Niemöller—he’s eighty. But he has stayed young because he is unafraid.”

Niemöller wasn’t able to resist fear because he possessed some super-human anti-fear gene, but because of God’s…