Jesus performed many other signs in the presence of his disciples, which are not recorded in this book. But these are written that you may believe that Jesus is the Messiah, the Son of God, and that by believing you may have life in his name.John 20:30-31
Most Bible teachers support the view that the Gospel of John and 1-3 John were written by the same John, the disciple whom Jesus loved. In the Gospel of John, he captured many signs and speeches of Jesus so that people may believe Jesus is the Messiah, the son of God. He is the way and the only way to God which leads to eternal life through salvation. Salvation is accomplished by Jesus. All we need to do is to accept it. However, after we believe, we have to walk with God and have fellowship with Him and His family. It is what we the believers have to do.
We proclaim to you what we have seen and heard, so that you also may have fellowship with us. And our fellowship is with the Father and with his Son, Jesus Christ. We write this to make our joy complete.1 John 1:3-4
About the same time, John also wrote 1 John, the epistle, encouraging brothers and sisters to remain in the right fellowship with “us”, which is the fellowship with the Father and with His Son. How? by walking in the light, obeying His word, loving one another….
At his advanced age, John was aware that he will soon be with the Lord. He wanted to make sure brothers and sisters would not deviate from what was taught by the eye-witness of Jesus Christ, the ones who have seen and touched the Lord during His earthly ministry. Heresies and cults infiltrated the church already. A bit like today, popular theories of all kinds were floating around. John clearly spoke against them and taught bro/sis how to distinguish them.
1 John is filled with teachings, encouragement, and even some warnings. I pray that we will be encouraged by the book and rejoice in the fellowship of God, the Father, the Son, and the fellowship of brothers and sisters.
Question: What fellowship are you in today?