Dr. Gruber received his B.A. in Theology from Moody Bible Institute. He attended Bethel Seminary - West, and Trinity Theological Seminary and received his M.A. in Biblical Studies. He also holds an M.A. in History from Excelsior College and the Ph.D. in Philosophy and History from Trinity Theological Seminary. Dr. Gruber has served as Adjunct Professor for Azusa Pacific University (Education) and Chapman University (Philosophy and Religion). He is a member of the Society of Christian Philosophers, and currently teaches and writes in Southern California.