Barnabas Piper is an assistant pastor at Immanuel Church in Nashville and is the author of several books and multiple small group studies including—Help My Unbelief, Hoping for Happiness, and Ecclesiastes: Finding Meaning in a World of Passing Pursuits. He has contributed to numerous websites and publications and writes regularly for He Reads Truth. Piper speaks at churches and conferences around the country and lives in the Nashville area with his wife and two daughters.

Ted Kluck has written for ESPN the Magazine, USA Today, Sports Spectrum Magazine, and ESPN.com Page 2. Ted has authored or co-authored several books including Facing Tyson: 15 Fighters, 15 Stories, Paper Tiger: One Athlete's Journey to the Underbelly of Pro Football, Why We're Not Emergent (by Two Guys Who Should Be), and Why We Love the Church. In 2010 Ted founded Gut Check Press, a small publishing house, where he holds the title Co-Founder and Secretary of the Interior. Ted also co-hosts The Happy Rant Podcast, The Gut Check Podcast, and Kluck. He has played professional indoor football, coached high school football, trained as a professional wrestler, served as a missionary and teaches journalism at Union University. Ted lives in Jackson, TN, with his wife and two sons. He's a frequent speaker at conferences and events.