Jude teaches us to earnestly contend for that form of doctrine that gives God the glory and was delivered in its purity during the time of Christ and the Apostles.
It would seem that John wants us all to be able to lay our head on Jesus’ chest.
Jesus tells James that he would follow Him through sufferings. As recorded in Acts 12, James became the first martyr among the Apostles. He wanted to be where Jesus was and his desire was fulfilled.