The Grail Knight's book was a large Bible kept and read by the Grail Knight, who guarded the Holy Grail at the Temple of the Sun. It contained illuminated borders and artwork to accompany its hand-lettered text. In 1938, Indiana Jones had entered the Grail sanctuary to find the knight reading the Bible, which rested on a stone table. When the knight felt Jones' presence he stopped reading, grabbed his sword, and tried to strike Jones. Unfortunately, the knight's strength had passed through the centuries, and he fell backward upon his manuscript.