The Sangreal, the Holy Grail that is the key to Merlin's weapon capable of destroying ascended beings, had been hidden away by Morgan Le Fay and protected by a series of safeguards designed to ensure that only the most virtuous would succeed in claiming it. The Parchment of Virtues, a scroll with writings in the Ancient language, was purportedly left behind by Morgan herself as a guide for knights of noble spirit. When SG-1 visited the planet where the Sangreal had been hidden, they found the Parchment of Virtues and Osric, the keeper of the archives, in the village library.
The Parchment states: "Only those of virtue true may win the prize concealed. Beyond the reach of the flawed and tainted, the Sangreal shall instead belong to he who speaks the guardian's name. Prudence, wisdom, charity, kindness, and faith, let these be your guide on this perilous quest."
The Parchment of Virtues was intended to be interpreted literally. The qualities it named were required to pass Morgan's tests and claim the prize:
Cross Reference: Force Field Trap, Morgan Le Fay, Osric, Sangreal, Sangreal Dragon, Sangreal Planet, Time Distortion Maze
Episode Reference: The Quest