Over the years I have bought many commentaries on all four Gospels of the New Testament. I have many commentaries on the Gospel of John in our library. Some of these commentaries on the Gospel of John I have never read because they are massive. Also I bought these commentaries believing I would need them when I was in the Gospel Ministry. Now I am just a 61 year old man studying the Gospel of John. I have never used this three volume commentary on the Gospel of John by Schnackenburg. I got it out because this morning I was reading a commentary on the Gospel of John titled, "The Gospel of John: A Commentary" by Frederick Dale Bruner and he mentioned this massive commentary on the Gospel of John by Schnackenburg, so I came down here to look at volume one of Schnackenburg's commentary on the Gospel of John. This commentary on the Gospel of John is over one thousand pages! The commentary on the Gospel of John by Bruner is 1281 pages long! In my upstairs study I have a two volume commentary on the Gospel of John titled, "The Gospel Of John: A Commentary" by Craig S. Keener that is over 1000 pages long.
When we were students at Reformed Bible College, Grand Rapids Michigan many years ago I took a class on the Gospel of John. In that class we used a commentary on the Gospel of John titled, "The Gospel According To John" [The New International Commentary On The New Testament] by Leon Morris. When we were at Reformed Theological Seminary, Jackson Mississippi I used this commentary on the Gospel of John, "The Gospel of John" Two Volumes [The Anchor Bible] by Raymond Brown.
Well I will close to read my commentaries on the Gospel of John. I have been reading my commentaries on John 1:14 "And the Word became flesh and dwelt among us, and we beheld His glory, the glory as of the only begotten of the Father, full of grace and truth."
Before closing I should mention the last books I have bought on the Gospel of John for our library.
"John 1-10" New Testament IVa [Ancient Christian Commentary On Scripture] Edited By Joel C. Elowsky
"John 11-21" New Testament IVb [Ancient Christian Commentary On Scripture] Edited By Joel C. Elowsky
"John" [Baker Exegetical Commentary On The New Testament] by Andreas J. Kostenberger
"A Theology Of John's Gospel And Letters: The Word, the Christ, the Son of God" by Andreas J. Kostenberger
"Father, Son and Spirit: The Trinity and John's Gospel" by Andreas J. Kostenberger & Scott R. Swain
"The Gospel Of John: A Commentary" by Frederick Dale Bruner
"Johannine Discipleship as a Covenant Relationship" by Rekha M. Chennattu
"John 1-12" New Testament IV [Reformation Commentary On Scripture] Edited By Craig S. Farmer
I recently pre-ordered this book coming out in Fall 2014, "Johannine Theology: The Gospel, the Epistles and the Apocalyse" by Paul A. Rainbow.
"[30] And many other signs truly did Jesus in the presence of his disciples, which are not written in this book:
[31] But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name." John 20:30,31