Torah 31 Tinyana: Rabeinu proves how from the song one is singing, you can determine whether he has accepted upon himself the yoke of the Torah or not.

Torah 32: Rabeinu discusses why there are great Tzadikim and even hidden tzaidkim who hide their lessons from the world, and why they have teachings that are written down but burnt and lost.

Rabeinu also connects this to the Mashiach’s spirit, the spirit of zealousness, sexual purity, the Sotah case, the nose, the facets of the Torah, and how the burning/loss of holy sefarim protect us from the dissemination of heretical books that make it impossible to draw close to G-d.