Dodson posted a bit from Tim Keller’s piece about what it means to be gospel centered. I am reposting that one, plus another one farther down in the article.
I do not simply mean by ‘gospel-centered’ that ministry is to be doctrinally orthodox. Of course it must certainly be that. I am speaking more specifically. (1.) The gospel is “I am accepted through Christ, therefore I obey” while every other religion operates on the principle of “I obey, therefore I am accepted.” (2.) Martin Luther’s fundamental insight was that this latter principle, the principle of ‘religion’ is the deep default mode of the human heart. The heart continues to work in that way even after conversion to Christ. Though we recognize and embrace the principle of the gospel, our hearts will always be trying to return to the mode of self-salvation, which leads to much spiritual deadness, pride and strife, and ministry ineffectiveness. (3.) We must communicate the gospel clearly–not a click toward legalism and not a click toward license. Legalism/moralism is truth without grace (which is not real truth); relativism is grace without truth (which is not real grace). To the degree a ministry fails to do justice to both, it simply loses life-changing power.
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So “religion” just drains the spiritual life out of a church. But you can “fall off the horse” on the other side too. You can miss the gospel not only through legalism but through relativism. When God is whoever you want to make him, and right and wrong are whatever you want to make them–you have also drained the spiritual life out of a church. If God is preached as simply a demanding, angry God or if he is preached as simply an all-loving God who never demands anything–in either case the listeners will not be transformed. They may be frightened or inspired or soothed, but they will not have their lives changed at the root, because they are not hearing the gospel. The gospel shows us that God is far more holy and absolute than the moralists’ god, because he could not be satisfied by our moral efforts, even the best! On the other hand the gospel shows us that God is far more loving and gracious than the relativists’ god. They say that God (if he exists) just loves everyone no matter what they do. The true God of the gospel had to suffer and die to save us, while the god of the relativist pays no price to love us.
The gospel produces a unique blend of humility and boldness/joy in the convert. If you preach just a demanding God, the listener will have “low self-esteem”; if you preach just an all-loving God, the listener will have higher self-esteem. But the gospel produces something beyond both of those. The gospel says: I am so lost Jesus had to die to save me. But I am so loved that Jesus was glad to die to save me. That changes the very basis of my identity- -it transforms me from the root.
emphasis added
here is Tim Keller’s part 1. very interesting distinction he makes between unnatural and natural church planting.