Jesus, like many others in history, was unable to alleviate the fear of God in the population he taught, and he was crucified.
The masses, thankfully, learned some restraint, and are no longer quite as prone to actually crucifying messengers of Love out of fear. Yet the thought to crucify remains subtly en masse, as long as the fear of God/Love remains unalleviated.
The book, Without the idea of death: There is only Life, and all books to come after, is/are meant to alleviate the fear of Knowing God in the masses. It is meant to let Jesus, and the masses, off the cross.