King Arthur's messianic return

King Arthur's messianic return refers to the idea that one day King Arthur will come back to life and save the day. This idea is often seen in stories, myths, and legends. It's similar to the idea of a hero coming back to save the day. In the case of King Arthur, he is believed to have died a long time ago, but will come back to save the people when they are in a time of need. So when times are tough, people might say King Arthur will come back, meaning that someone or something special might appear to help them.