Dennis McCallum is founder and lead pastor of Xenos Christian Fellowship in Columbus, Ohio. Leaders in Xenos are home grown through organic discipleship. He is the author of a number of books, including Discovering God, Members of One Another, and Satan and His Kingdom. Jessica Lowery and her husband Ryan lead a network of house churches in Xenos Christian Fellowship. She also teaches the popular Creative Discipleship class at Xenos and is the author of Spiritual Confidence.