Why do some say that King Arthur is not dead but the lord Jesus Christ deliver him to other place and will come again to save the holy cross?

The belief that King Arthur is not dead but will return, often referred to as the "Once and Future King," stems from Arthurian legends that portray him as a heroic figure destined to save Britain in its time of need. This idea is sometimes linked to Christian themes, suggesting that Jesus Christ has taken Arthur to a heavenly realm, where he awaits a divine purpose. Such narratives reflect a blend of folklore and religious symbolism, emphasizing themes of hope, resurrection, and the eventual triumph of good over evil. They resonate with the desire for a savior figure during tumultuous times.