John 20:30, 31: "And truly Jesus did many other signs
in the presence of His disciples, which are not written in
this book; but these are written that you may believe that
Jesus is the Christ, the Son of God, and that believing
you may have life in His name."John states the purpose
of his book. His purpose was to convince his readers
that Jesus is the Christ, the Messiah who fulfilled God's
promises to Israel. Jesus is the Son of God, God in the flesh.
By believing these things, a person obtains eternal life.