Purpose of Gospel of John John states the purpose in John 20:30-31.  30 Jesus performed many other signs in the presence of his disciples that are not written in this book. 31 But these are written so that you may believe that Jesus is the Messiah, the Son of God,[a] and that by believing you may have life in his name. John builds his Gospel on 7 key miracles and is more thematic in arrangement.   A.   The Ministry of the Pre-incarnate King (1:1-18)B.    The Ministry of the Incarnate King (1:19-19:42)C.   The Ministry of the Risen King (20:1-21:25) §  The Incarnation of the Son of God (John 1:1-18)§  The Presentation of the Son of God (John 1:19-4:54)§  The Confrontation with the Son of God (John 5-12)§  The Instruction of the Son of God (John 13-16)§  The Intercession of the Son of God (John 17)§  The Execution of the Son of God (John 18-19)§  The Resurrection of the Son of God (John 20-21)        The Bible From 30,000 FeetThe Jews thought their ancestry would save them.  Jesus said man is bound by sin.Freedom is found in Jesus.