Sadly, Jesus had yet to perfect the skill of necromancy, and his brother returned from the grave only to continue to rot and decay.
No one likes a zombie, so James headed off into the wilderness to be alone. He raised some zombies to play with, and they have continued to create more zombies to keep company.
James Christ is often ignored by the Christian church, as he shows a sign of Jesus' weakness. He is also VERY smelly.