The bit about John, in my above posts:
[link to www.urantia.org]

(1555.3) 139:4.10 John had a cool and daring courage which few of the other apostles possessed. He was the one apostle who followed right along with Jesus the night of his arrest and dared to accompany his Master into the very jaws of death. He was present and near at hand right up to the last earthly hour and was found faithfully carrying out his trust with regard to Jesus’ mother and ready to receive such additional instructions as might be given during the last moments of the Master’s mortal existence. One thing is certain, John was thoroughly dependable. John usually sat on Jesus’ right hand when the twelve were at meat. He was the first of the twelve really and fully to believe in the resurrection, and he was the first to recognize the Master when he came to them on the seashore after his resurrection.

(1555.4) 139:4.11 This son of Zebedee was very closely associated with Peter in the early activities of the Christian movement, becoming one of the chief supporters of the Jerusalem church. He was the right-hand support of Peter on the day of Pentecost.

(1555.5) 139:4.12 Several years after the martyrdom of James, John married his brother’s widow. The last twenty years of his life he was cared for by a loving granddaughter.

(1555.6) 139:4.13 John was in prison several times and was banished to the Isle of Patmos for a period of four years until another emperor came to power in Rome. Had not John been tactful and sagacious, he would undoubtedly have been killed as was his more outspoken brother James. As the years passed, John, together with James the Lord’s brother, learned to practice wise conciliation when they appeared before the civil magistrates. They found that a “soft answer turns away wrath.” They also learned to represent the church as a “spiritual brotherhood devoted to the social service of mankind” rather than as “the kingdom of heaven.” They taught loving service rather than ruling power — kingdom and king.

(1555.7) 139:4.14 When in temporary exile on Patmos, John wrote the Book of Revelation, which you now have in greatly abridged and distorted form. This Book of Revelation contains the surviving fragments of a great revelation, large portions of which were lost, other portions of which were removed, subsequent to John’s writing. It is preserved in only fragmentary and adulterated form.