I've heard plenty of Christians try to answer the why question by going back to the what. "You have to believe because Jesus is the Son of God." But that's answering the why with more what. Increasingly we live in a time in which you can't avoid the why question. Just giving the what (for example, a vivid gospel presentation) worked in the days when the cultural institutions created an environment in which Christianity just felt true or at least honorable. But in a post-Christendom society, in the marketplace of ideas, you have to explain why this is true, or people will just dismiss it.

To be loved but not known is comforting but superficial. To be known and not loved is our greatest fear. But to be fully known and truly loved is, well, a lot like being loved by God. It is what we need more than anything. It liberates us from pretense, humbles us out of our self-righteousness, and fortifies us for any difficulty life can throw at us.

The church is not a museum for pristine saints, but a hospital ward for broken sinners.

If your fundamental is a man dying on the cross for his enemies, if the very heart of your self-image and your religion is a man praying for his enemies as he died for them, sacrificing for them, loving them - if that sinks into your heart of hearts, it's going to produce the kind of life that the early Christians produced. The most inclusive possible life out of the most exclusive possible claim - and that is this is the truth. But what is the truth? The truth is a God become weak, loving and dying for the people who opposed him, dying forgiving them.

The sin under all other sins is a lack of joy in Christ.

The world is polarizing over religion. It is getting both more religious and less religious at the same time.

The gospel destroys pride because it tells us we are so lost that Jesus had to die for us.