Afraid of doubt? John Piper’s son says he fears for your faith Barnabas Piper wants to create "discomfort for Christians who've never questioned." Read More CultureJonathanJune 24, 2015apologetics, Barnabas Piper, certainty, doubt, evil, faith, idolatry, John Piper, Jonathan Merritt, natural disasters, problem of evil, questions, sin, theodicy