Edmund Rybarczyk, professor of Historic and Systematics at Vanguard University in California has written a well researched, concise but informative work on Protestant understandings of the Holy Spirit. Being an ordained Assemblies of God minister, Rybarczyk has a good handle on the various Pentecostal views of the Spirit but goes into good detail here in surveying modern Protestant views on the Spirit. Rybarczyk believes upfront that a general survey without attention to the details of a theologian's ideas about the Spirit is damaging. He says in the introduction, "A theologian myself, I believe specificity and nuance of thought is of great importance. If "the devil is in the details," so also are the beauty, truth, and meaning of an idea or position" (ix). The idea of digging into the details of person's theology is so important because general surveys time and time again fail at locating an author's point of view in relation to his historical situation...