David Campbell is originally from Toronto. He holds three degrees in theology from the University of Toronto and the University of Durham, and also studied at Trinity Evangelical Divinity School. He has planted and led churches in the United Kingdom and Canada. He is the co-author (with G.K. Beale) of Revelation: A Shorter Commentary and sole author of Mystery Explained: A Simple Guide to Revelation. He and his wife Elaine have been married for almost 35 years. They have eight children and four grandchildren. David is currently a church consultant and lecturer based in Stratford, Ontario.