Mike Yaconelli is the author of bestselling books Dangerous Wonder and Messy Spirituality. He was the senior editor for the Wittenburg Door (1971-1996), a satirical religious magazine noted for its irreverent humor, in-depth interviews, and commitment to reforming the evangelical church. He was the cofounder of Youth Specialties, an international organization devoted to equipping youth workers through training and resources. Mike was a prophetic voice in the church-at-large and was a devoted husband and father until his death in 2003.