Jeff GruppJeff Grupp is the founder of Kalamazoo Jail Ministry (KJM), where he ministers to, and fellowships with, jail inmates daily. He has worked extensively as a college lecturer teaching philosophy. Grupp was an atheist until he was converted by a series f supernatural encounters with GOD during his mid-thirties. He has two master's degrees, one in philosophy and another in theology, and he is currently working for his PhD in theology. He has published over a dozen academic articles. Grupp is married to his wife, Amy, and they have four children. Read More Read Less