Rabeinu explains that when one blemishes in the faith of the sages, he weakens the strength of medicines to heal, and this person doesn’t have any healings for his sicknesses. The way to restore healing is to restore faith in the sages… how? Fulfilling a vow/neder immediately. When he fulfills a vow immediately and restores his faith in the sages, he allows the light of the forefathers to shine into him, and and this light of the forefathers raises this person to the “delight of Shabbat.”

Rabeinu also delves into the subjects of : charity, simple faith in the words of the sages, chametz and matza, subduing our enemies, and restoring our G-dly image…