How does Day 10 of the Decameron bring earlier themes together?

In the Decameron, Day 10 serves as the culmination of the work’s narrative arc. By this final stage, all the themes explored throughout the preceding nine days are brought to a high pitch, effectively transforming the impure into the pure and the common into the heroic.1

This final day synthesizes the diverse tones of the collection—ranging from the wit and gaiety of the early days to the trickery, license, and tragic elements of the middle sections—into a unified conclusion. The cycle of tales is ultimately brought to a close with the widely borrowed story of The Patient Griselda, which exemplifies the author's ability to weave together complex human experiences. Throughout the work, Giovanni Boccaccio maintains an affirmation of moral values, ensuring that even in the most licentious passages, a sense of humanity’s potential and its limitations remains central to the narrative.21