The book of John is a Gospel that contains Narrative History, Sermons, Parables, and a few Prophetic Oracles. It was written by the Disciple/Apostle John around 85-95 A.D. The key personalities of this book are Jesus Christ, His Twelve Disciples, Mary Magdalene, John the Baptist, Lazarus, his sisters Mary and Martha, Jewish religious leaders, and Pilate.It was written so that all may believe in Jesus Christ the Son of God who gives eternal life. John’s gospel uses the word "Believe" 98 times and the word "Life" 36 times, in an effort to embed the importance that one must believe in order to live eternally. John is not one of the three synoptic (common view) gospels, but instead was written with a more theological substance, yet equally as inspired and important as the first three gospels."And there are many other things which Jesus did, which if they were written in detail, I suppose that even the world itself would not contain the books that would be written" (21:25).