" If Jesus predicted that the imminent apocalypse would arrive within his own generation, before his disciples had all died, what was one to think a generation later when in fact it had not arrived? One might conclude that Jesus was wrong. But if one wanted to stay true to him, one might change the message that he proclaimed so that he no longer spoke about the coming apocalypse. So it is no accident that our final canonical Gospel, John, written after that first generation, no longer has Jesus proclaim an apocalyptic message. He preaches something else entirely. "

― Bart D. Ehrman , How Jesus Became God: The Exaltation of a Jewish Preacher from Galilee