chunk: Book III is centered on the virtue of Chastity as embodied in Sir Britomart, a lady knight. Resting after the events of Book II, Guyon and Arthur meet Britomart, who wins a joust with Guyon. They separate as Arthur and Guyon leave to rescue Florimell, while Britomart rescues the Redcrosse Knight. Britomart reveals to the Redcrosse Knight that she is pursuing Sir Artegal because she is destined to marry him. The Redcrosse Knight defends Artegal and they meet Merlin, who explains more carefully Britomart's destiny to found the English monarchy. Britomart leaves and fights Sir Marinell. Arthur looks for Florimell, joined later by Sir Satyrane and Britomart, and they witness and resist sexual temptation. Britomart separates from them and meets Sir Scudamore, looking for his captured lady Amoret. Britomart alone is able to rescue Amoret from the wizard Busirane and reunite the lovers.
  Book IV is centered on the virtue of Friendship as embodied in Sir Cambell and Sir Triamond.