John, James, and Judas were all apostles of Jesus Christ. They were among the twelve disciples chosen by Jesus to spread his teachings and help establish the early Christian Church. John was known as the beloved disciple and is traditionally believed to be the author of the Gospel of John. James was the brother of John and the leader of the early church in Jerusalem. Judas Iscariot was the disciple who betrayed Jesus and ultimately led to his crucifixion.