JOHN PIPER, former pastor of the Bethlehem Baptist Church in Minneapolis (USA), author of more than 50 books, many of which have become best sellers (some titles are also available in Italian), founder of the Desiring God ministry (www.desiringgod.org), and appreciated preacher with an incisive and profound message, with a special focus on Mission topics. He is married and has 5 children.
JAMES DAVID (J.D.) GREEAR is Pastor of The Summit Church in Raleigh-Durham (USA), a church of over 10,000 members. He is also the current President of the Southern Baptist Convention. He is also the author of numerous books, founder of Greear Ministries, a daily broadcast and the podcast Ask Me Anything. J.D. Greear is married and has 4 children.