If you aim at nothing, you’re bound to hit it. But if you aim at a target, nail it dead center, yet choose the wrong target, you hit the same thing—nothing. Think of the above target, all of it, as faith. What’s the bull’s eye at the center? What’s the core of following Jesus? Some state verbal assent will do it, saying Jesus is Savior. That’s certainly a ring—confessing Jesus. Others proclaim the importance of being a good person. That’s another ring—obedience. Yet more will tell you that believing the right things hits the bull’s eye. That’s another ring—correct doctrine.

But while good, these all miss the core, which Jesus gave...