D. A. Carson is emeritus professor of New Testament at Trinity Evangelical Divinity School in Deerfield, Illinois, and is the author or editor of more than fifty books, including The God Who Is There and How Long, O Lord? He is one of the founders of The Gospel Coalition.
Roy Worley is a full-time voice actor living in the Chicago area. His warm, clear, baritone voice can be heard narrating videos, directing people in phone messages, and narrating audiobooks in a variety of genres. When not recording, Roy works at his church, volunteering in men's ministry.