Final answer:
The knights of Camelot start praying for Sir Gawain, anticipating his demise on the quest for the Green Knight, reflecting the chivalric values and mystical themes of Arthurian tales.
Step-by-step explanation:
The knights of Camelot begin praying for Sir Gawain even before he goes in search of the Green Knight since they truly believe he will be killed. This is a clear demonstration of the themes of chivalry, loyalty, and the supernatural that are prevalent throughout Arthurian legends and medieval literature. The excerpts provided showcase elements such as the chivalric code, the bravery of knights, and mystical events which enrich the narrative of the knights and their adventures in Camelot.