John 20:31 But these things are written, that ye might believe that Jesus is the Christ, and that believing ye might have life through his name.
The Gospel of John (and all Scripture) was written with the purpose that the reader and hearer might might be brought to faith in Jesus as the Christ. And then when we believe we will have life through His name. There is a two-fold promise in John’s purpose statement: 1) The Gospel in the Word will bring us to believe in Jesus, and 2) Believing in Jesus will give us eternal life.
Throughout his Writings John connects faith and life: ”whosoever believeth in me hath everlasting life.” This promise is worked out within us by the Holy Spirit. It is the Spirit who creates faith in Jesus by the hearing of the gospel, and then it is the Spirit who comes to live in our spirit as eternal life.
This promise is really very remarkable, and it is very helpful for us when we remember it: we have the Life of God living within us. We may call upon This Life in every need, in any trouble, and during any crisis. Trust Him to bring about the needed change and answer our prayer. And furthermore, ”remembering our baptism” prevents more evils from coming into our lives daily. Yes, we have life. That life is God. That life is good. That life is eternal.