John Mark Comer is an author, speaker, and the pastor for teaching and vision at Bridgetown Church in Portland, Oregon. He is known for his work on spiritual formation, discipleship, and bridging the gap between the biblical and the contemporary world. Comer has authored several books on Christian living, such as "The Ruthless Elimination of Hurry," which focuses on how to stay emotionally healthy and spiritually alive in the chaos of the modern world. His writing is characterized by a conversational tone and an emphasis on practical application of spiritual principles.