"A Historical and Theological Investigation of John's Gospel" by Kirk R. MacGregor offers an in-depth analysis and innovative perspectives on various aspects of Johannine studies. The book sheds light on often-overlooked traditional theological interpretations of the Gospel of John and provides new insights into authorship as well as the content of the underlying sources. MacGregor examines central themes such as faith in Jesus, the significance of John 14:6, and the relationship between the resurrected Jesus and Thomas. By applying the doctrine of middle knowledge, he seeks to explain the apparent contradictions between divine predestination and human freedom. This comprehensive investigation is significant for both professionals and those interested in theological and historical questions.