A pastor, noted speaker, and author of numerous articles, Tim Challies is a pioneer in the Christian blogosphere. Tens of thousands of people visit Challies.com each day, making it one of the most widely read and recognized Christian blogs in the world. Tim is the author of several books, including Visual Theology, Epic: An Around-the-World Journey through Christian History, and his latest ECPA award-winning book, Seasons of Sorrow: The Pain of Loss and the Comfort of God. He and his family reside near Toronto, Ontario.

Josh Byers is a communications pastor, artist, speaker, husband, and father who resides in Iowa. Josh is an idea maker and creative visionary. His work has been featured in a wide variety of outlets from the Gospel Coalition to the Tonight Show. He writes and publishes graphics regularly at joshbyers.com.