Book excerpt: This commentary seeks above all to explain the text of John's Gospel to those whose privilege and responsibility it is to minister the Word of God to others, to preach and to lead Bible studies. I have tried to include the kind of information they need to know, but to do so in such a way that the informed layperson could also use the work in personal study of the Bible, exclusively for purposes of personal growth in edification and understanding. In particular, I have attempted: (1) To make clear the flow of the text. (2) To engage a small but representative part of the massive secondary literature on John. (3) To draw a few lines towards establishing how the Fourth Gospel contributes to biblical and systematic theology. (4) To offer a consistent exposition of John's Gospel as an evangelistic Gospel. - Preface.