The disciples, (as Rob Bell points out in this NOOMA video) at least some of them, were young, maybe 15, 16 years old. And yet God used teenagers to change the world.
The Harris brothers are rebelling against low expectations set for teens and encourage others as well. The book breaks down the myth of teenagers and what they can do to challenge themselves and to really undertake difficult circumstances that will help them to grow and mature.
Read the first chapter here. Read a review here and here. Download the book’s study guide here. Check out their popular website and blog here. Listen, read, and/or watch a sermon by John Piper on the subject of teenagers here. Buy the book here.