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At King Arthur's prompting, instructions for its use are read aloud (by Michael Palin) from the fictitious Book of Armaments, Chapter 2, verses 9–21, parodying the King James Bible and the Athanasian Creed: Despite its ornate appearance and long-winded instructions, it functions much the same as any other hand grenade. The Holy Hand Grenade is described as one of the " sacred relics" carried by Brother Maynard (Idle). The Holy Hand Grenade of Antioch is a visual satire of the Sovereign's Orb of the United Kingdom, and may refer to the mythical Holy Spear of Antioch. The Sovereign's Orb of the United Kingdom, which The Holy Hand Grenade of Antioch satirises The Holy Hand Grenade of Antioch is ultimately used to kill the rabbit and allow the quest to proceed. Knowing they cannot risk attacking again, they try to find another way to defeat the beast. Sir Robin asks if running away "more" would confuse it.
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Arthur panics and shouts for the knights to retreat ("Run away!"). The knights themselves have no hope of killing or injuring the rabbit. Despite their initial shock, Sir Robin soiling his armour again, and Tim's loud scoffing, the knights attack in force, but the rabbit injures several of the knights and kills Gawain and Ector with ease. The rabbit suddenly leaps at least eight feet directly at Sir Bors' neck and bites clean through it in a single motion, decapitating him to the sound of a can opener. Bors draws his sword and confidently approaches it. Ignoring Tim's warnings ("a vicious streak a mile wide!"), King Arthur orders Bors ( Terry Gilliam) to chop the rabbit's head off. Despite the cave's entrance being surrounded by the bones of "full fifty men" fallen, Arthur and his knights no longer take it seriously. Sir Robin ( Eric Idle) soils his armour from the description of it, before everyone except Tim sizes it up as merely an innocuous white rabbit.
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As the knights approach the cave and the rabbit, their "horses" become nervous, forcing the knights to dismount. Tim verbally paints a picture of a monster so terrible as to have killed everyone who has tried to enter the cave, and warns them, "death awaits you all – with nasty, big, pointy teeth!". King Arthur ( Graham Chapman) and his knights are led to the cave by Tim the Enchanter ( John Cleese) and find that they must face its guardian beast. This is guarded by a monster which is initially unknown. The Cave of Caerbannog is the home of the Legendary Black Beast of Arrrghhh.
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