1 John 3:2 says that " when He shall appear, we shall be like Him; for we shall see Him as He is." The longer that we hang around Jesus by reading his word the more like Him we will become. This may be the reason that God decided to give us 4 gospels. That way if you sleep through Matthew, you have Mark. What happens when you skip over Mark, then you have Luke. So something happens, and you completely overlook Luke then you have John. God doesn't want us to miss out on His Son and everything that He is.
All of the disciples died violent deaths except John. However, it isn't that the Romans didn't really try to kill him. They even placed him in boiling oil. However, when this didn't kill him, they sent him to a deserted island called Patmos, where God gave him visions, and he wrote the book of Revelation.
After John was released from Patmos, he would travel around Asia Minor teaching and preaching. Everywhere he went he would give the same message; "Children love one another." If you study back, John was not always like this. We will get a small glimpse of this during this book. John used to have a short temper and was even called a "son of thunder" (Mark 3:17) by Jesus. Throughout the scripture you can see that thousands came to Jesus for healing, hundreds came to hear him teach, 12 left everything and one stood at the bottom of the cross, John. So as the book closes and Jesus is dying on the cross he looked down and asked John to take care of his mother. This is where he became the apostle of love. John called himself the disciple that Jesus loved because it was no surprise that John loved Jesus. The surprise was that Jesus loved him even though he was originally a "son of thunder."
John finishes the book telling us that all the books in the world could not contain everything that could be written about Jesus. John was selective about what he wrote about Jesus. He only wrote about eight signs or miracles. He did not write about Jesus baptism, His temptation or even the garden of Gethsemane. What he did write about was the big "I AM" statements. I AM the bread of life, I AM the good shepherd, I AM the way, the truth, and the life, I AM the resurrection, I AM the vine, and I AM the door. He wrote this book so that we would KNOW that Jesus is the Christ, the Son of God; and that if we believe this, we will have eternal life through HIS name.
"By your love shall all men know you are My disciples," said Jesus (John 13:35). As we study this gospel of love may we be transformed as we fall in love with Jesus.