The Gospel According to St. John: An Introduction With Commentary and Notes on the Greek Text, by C.K. Barrett, is a seminal scholarly work providing a comprehensive analysis of the Fourth Gospel, covering its historical background (authorship, date), theology (Jesus as Messiah, divine Son of God, life through belief), literary structure (signs, I Am sayings, prologue, book of glory), and detailed exegesis of the original Greek text, making it a standard resource for understanding John's profound theological message. This book as a major, standard work, valued for its profound grasp of the text, even while engaging critically with historical claims, making it useful for pastors and scholars alike.