Green Knight of the story turns him green. He tests Moses three times by doing seemingly evil acts, which are eventually revealed to be noble deeds to prevent greater evils or reveal great goods. Both the Arthurian Green Knight and Al-Khidr serve as teachers to holy and upright men (Gawain/Moses), who thrice tested their faith and obedience. It has been suggested that the character of the Green Knight may be a literary descendant of Al-Khidr, brought to Europe with the Crusaders and blended with Celtic and Arthurian imagery. The beheading game appears in a number of tales, the earliest being the Middle
Lady of the Lake mother of Jesus as the Lady of the Lake, evidencing fusion between Arthurian legend and middle-Christian history. Alfred, Lord Tennyson adapted several stories of the Lady of the Lake for his 1859–1885 poetic cycle "Idylls of the King". He too splits her into two characters; Viviane is a deceitful villain who ensnares Merlin, while the Lady of the Lake is a benevolent figure who raises Lancelot and gives Arthur his sword. Some other authors choose to emphasize a single character. Modern authors of Arthurian fiction adapt the Lady of the Lake legend in various ways, often using two or more