The works that he done, the churches he started, someone else is doing it now. Nothing left but memories of what was, and what could have been. He's in tremendous pain from his burn wounds. John said Jesus' eyes were like fire, his hair like wool, his feet like brass and his voice like the sound of many waters. John once laid his head upon Jesus' chest during the Passover meal.
Great things can happen in the midst of suffering.
For the three Hebrews thrown into the fire, for the blind man on the roadside, for the sick man by the pool, for John on the island of Patmos. Great things can happen to you in the midst of your suffering too. I will rejoice in Jehovah, I will joy in the God of my salvation.