Fasting is abstention from food --
from the ordinary meaning of the word; but abstention or no
abstention from food neither makes us holy or unholy. Total
abstention mystically means death. Thus, fasting really means
abstention from worldly things, for we would die as far as worldly
matters are concerned; and after that, when we partake of food of
divine nature, we will live in God.
Fasting empties the soul of matter,
and presents the soul pure and nimble to the body, according to the
divine words. Then, on the one hand, worldly nourishment consists of
temporal life and iniquities, while divine nourishment is faith,
hope, love, patience, knowledge, peace, prudence; as our Lord said
in Matthew: "Blessed are they who hunger and thirst after
righteousness, for they shall be filled," where truly He
attributes this longing to the soul and not to the body.