1 John 1:1-4 That which was from the beginning, which we have heard, which we have seen with our eyes, which we looked upon and have touched with our hands, concerning the word of life— the life was made manifest, and we have seen it, and testify to it and proclaim to you the eternal life, which was with the Father and was made manifest to us— that which we have seen and heard we proclaim also to you, so that you too may have fellowship with us; and indeed our fellowship is with the Father and with his Son Jesus Christ. And we are writing these things so that our joy may be complete.
The natural response to the joy we receive in Christ is to share it. How could we, knowing that we have experienced new life in the Son of God, keep that to ourselves? We should be overflowing with joy, ready to burst if we don’t share it.
John was among the apostles who walked with Jesus while He was here on this earth. He writes in his first letter to the churches in Asia Minor that he wants them to share in the fellowship he and others have with God through Christ. He proclaims all he witnessed with his own eyes, all he heard with his own ears, so that the joy of others might be made full. He’s not willing to keep it all to himself. What he was sharing was life.
Jesus is the Word of life and He made Himself known to mankind. John was there when Jesus was present in the flesh, God incarnate sharing life with other people. John knew that real life is in Jesus and in this he found his joy. He also knew that his joy would be made all the more complete if he told others about the Word. Notice his motive explained in verse 4, that “our” joy may be made complete.
Jesus is life. If you’ve experience new life in Him, share it with everyone around you, so that they will have joy AND so that your joy would be made more complete. If you haven’t experienced the life-giver, why not seek Him out? Find out what this life is that others are talking about. Ask God to reveal Jesus to you and make Him real to you. He will.