The author of John’s Gospel states that the book was written so that people might come to believe that Jesus is the Messiah whose life, death, and resurrection are God's saving act for humanity is indeed the Christ, the Son of God.
The author of John’s Gospel is clear about the purpose of the book. It was written that people might believe that Jesus is the Christ, the Son of God, and that by believing they might have life in his name. Each part of the statement is important. First, it focuses on Jesus, the human being who lived and worked at specific times and places. Second, it identifies Jesus as the The Messiah was the one who, it was believed, would come to free the people of Israel from bondage and exile. In Jewish thought the Messiah is the anticipated one who will come, as prophesied by Isaiah. In Christian thought Jesus of Nazareth is identified..., who is the fulfillment of God’s promises. Third, it refers to Jesus as the divine Son of God, the one in whom God is present and active. All three dimensions are essential aspects of Jesus’ identity. The intended effect of the Gospel’s witness to Jesus is that people might believe and thereby receive life. Life in its fullest sense means life in relationship with God. People are truly alive when they are related through faith to the God who made them. Life also has a future, since after death there is the hope of resurrection.