In addition, Jerry is a visiting professor at Biola University and Talbot Graduate School of Theology in California. Jerry has written several books on C.S. Lewis and his writings, and is the co-author of the book The Sacrament of Evangelism. Jerry has authored numerous articles and contributed many chapters to other books on topics related to C.S. Lewis as well. Jerry and his wife Claudia have four married children, four grandchildren, and a Welsh Corgi; they live in Wheaton, Illinois.