If God exists, and God is a non material, intangible being, then God exists outside of the material world. Objects bound to the material universe are born and in turn die, they have a lifespan. If God does not exist within the material universe, then God was never born, therefore God cannot die. God, if they exist, world have no material or tangible properties that can degrade. Also, if God exists outside of the material universe, then God is not bound to the constant of change, and would then be an immutable, un-movable, fixed object, and since death is dependent on mutability, then God could not change their state of existence, as they would be immutable.