In From Pentecost to the Triune God Steven Studebaker puts forth a provocative Pentecostal Trinitarian theology, arguing that the Holy Spirit completes the fellowship of the triune God and therefore shapes the identities of the Father and the Son. The Holy Spirit, Studebaker maintains, is not simply a passive end-product of a procession from the Father and Son but, rather, a dynamic person who plays an active role in the Trinity and...