The gospel is not just the ABC’s of Christianity, as Tim Keller says, but the A-to-Z. The gospel isn’t just the first step we need to take to enter God’s kingdom, it’s the fuel that empowers us to grow every day in the kingdom.
Every day a Christian will see more of God’s glory, more of his sin, and more of God’s grace that bridges the two. Greater awareness leads to greater gratitude, which leads to greater openness to God’s work, which leads to greater Christ-likeness.
Justin Anderson offers this powerful analogy in his new book Gospel Wakefulness:
Imagine you are driving down the road and your car stalls at a railroad crossing. You are understandably nervous as you try to reignite the car’s engine, but you become even more so when you see a train turn the corner in the distance and begin quickly closing the gap between it and you. The train engine’s horn is blaring and the engineer has thrown on the brakes, but you are too close and he’s coming too fast. You move from trying to get the car to start to trying to unfasten your seatbelt, but fear has made your hands stiffen and shake. You can’t get your seatbelt unfastened. The train is rushing toward you, and you know you’re going to be hit. And you are. Suddenly and from behind. A man in a truck behind you has decided to ram into your car and push you off the tracks, even as he is destroyed by the impact in the very spot you once occupied.
You get out of the car, shaken and still frightened. You are terrified by the gruesome scene, in shock over your rescuer’s sacrifice. You are grateful in a way you’ve never been grateful before. You wish you could thank the driver of the truck for saving your life. Even in your terrified awe, it feels good to be alive. You feel woozy, so you sit down on the trunk of your car, and as you’re trying to retrieve your cell phone from your pocket to call 911 and marveling at how little damage the violent shove did to the rear bumper, you hear a whimper from inside.
You didn’t know that before you’d left the house, as your kids were playing hide-and-seek, your youngest son decided to hide in the trunk of your car. As you open it up frantically and discover that he is miraculously unharmed, you suddenly realize the total greatness of the loss you almost suffered. Your gratitude, your amazement, your new outlook on life takes a giant leap forward.