Clark H. Pinnock (d. 2010) was professor emeritus of systematic theology at McMaster Divinity College in Hamilton, Ontario. Widely regarded as one of evangelicalism's most stimulating theologians, he authored or coauthored several widely discussed books, including The Wideness of God's Mercy and The Openness of God.
Daniel Castelo is William Kellon Quick Professor of Theology and Methodist Studies at Duke Divinity School. He is the author of several books, including Pentecostalism as a Christian Mystical Tradition, Pneumatology: A Guide for the Perplexed, and Confessing the Triune God.
Mike Chamberlain is an actor and voice-over performer, as well as an AudioFile Earphones Award-winning audiobook narrator. Along with animation and video game characters, Mike performs narration and voices promos for television. He lives with his wife and daughter in Southern California.