What was Richard Wagner’s final opera Parsifal about?

Parsifal, the final stage work by Richard Wagner, is a "theater-consecrating festival piece" (Bühnenweihfestspiel) that explores themes of purity, redemption, and the struggle between self-control and licentiousness.12

Set in an imagined medieval Spain, the story follows the quest of a naive youth named Parsifal. The narrative centers on the Grail knights, led by Amfortas, who suffers from a non-healing wound inflicted by the evil sorcerer Klingsor. Klingsor has also stolen the sacred spear that once pierced Jesus on the cross. To save the order, a "pure and innocent" man must recover the spear.1

After resisting the temptations of the sorceress Kundry, Parsifal retrieves the spear and eventually returns to the castle. He heals Amfortas’s wound with the spear, assumes leadership of the knights, and brings redemption to the repentant Kundry. Wagner infused the work with solemn, sacred symbolism, reflecting his idiosyncratic views on heroism, religion, and ethics.12