Rabeinu teaches us that the soul’s root is kavod/glory. Sometimes when a person receives new honor, it’s because glory is either coming to claim this person’s soul G-d forbid (it’s time for this soul to leave this person) or in most instances it’s to give this person a new soul (and this new soul is garbed in honor).
Rabeinu explains that we have to ensure that this kavod has a “face” which is only possible when we don’t fall into the desire of eating and our table is in a state of holiness. If we fall into this craving for food and eating in a non holy way, then this kavod/kingship is given to the brazen faced people of the generation and honor is blemished. Eating in holiness ensures that the kingship isn’t given to evil people…
Rabeinu goes on to delve into the subjects of: charity, the extraneous matters of the mind, hair, fear and love, cold water which heals the soul, giving honor to the elderly who forgot their Torah, praying with concentration, thunder, etc…