Most people are loathe to admit that they are just generally bent toward the bad, inclined to do it wrong. So when the Christian tradition declares to any and all, "You are a sinner," most people these days reply, "What did I do?" If sin exists at all, it is merely episodic, an occasional (and inexplicable) "lapse" from our better nature, which is at bottom "pretty good."

How foreign is the notion articulated by theologian Emil Brunner. Brunner once noted that we can, in principle, avoid any particular sin. And we often do. Few if any people give in to every dark impulse. The average person, whether or not he is particularly religious, resists many temptations tha…