Who was the author of John?
Traditions exist that say Thomas was the author of the book of John. The book does not say who wrote it and it is called John because it is assumed that John wrote it. If Thomas wrote it, it could easily be called the book of Thomas.
Another tradition states that the book is written by Lazarus because the title ‘The Disciple Jesus Loved’ given to the author occurs after Lazarus was raised from the dead. Lazarus is the only one pointed out as an individual whom Jesus loved.
There are other traditions, but the strongest is that the gospel was written by John, Son of Zebedee who was one of Jesus’ disciples. This was confirmed by the early church fathers and has been held by orthadox Christians through the centuries.
Who was John?
John was a disciple of Jesus. He was one of the two Sons of Thunder who seem to have been politically ambitious, or at least their mother was. Believing Jesus’ kingdom to be political, the Sons of Zebedee try to push for a high position of administration when Jesus’ kingdom comes. This leads to Jesus preaching about servant leadership. Peter, James, and John were closest to Jesus of his twelve. When in times of trial or trouble, Jesus would call these three off to the side. James and John were called Sons of Thunder probably because of their temperament. They may have been a little feisty.
It is a much older John who writes the book of John. He writes it in Ephesus when he is an elder there and is administrating many of the churches in Asia Minor (Turkey). Accounts say that he dies at Age 98. By his later years he had time to reflect on the deeper implications of Jesus’ life on earth. This is why the style and the themes of the book are nuanced and profound. It is also one of the reasons that the book differs from the other gospels. If John was familiar with the popular gospels circulating, he probably wanted to provide an account of what was missing.
Purpose
John’s gospel states that it was written so that we may believe. There is a problem with a variation in the verb tenses in this very important verse. A few translations use a tense that means ‘once and for all’. John was writing so that people may believe once and for all in Jesus. However, most texts state the verb in the continuous tense. The generally accepted translation is ‘that you may continue to believe’. This means that the book is primarily written for believers to encourage them in their belief. This might explain why believers are so encouraged when they quote John 3:16 to each other and unbelievers still look at us quite often as if we are speaking another language.
As we read this book together, I pray that we will be encouraged to walk with the Jesus that John knew personally.

