But he answered them, "An evil and adulterous generation seeks for a sign; but no sign shall be given to it except the sign of the prophet Jonah. For as Jonah was three days and three nights in the belly of the whale, so will the Son of man be three days and three nights in the heart of the earth."

Matthew 12:39-40

"By serious and frequent meditation of Heaven (The Divine Truths), it must be concocted, digested, and turned into the nourishment of our affections, before it can be powerful and operative enough to change them, and produce the necessary fruit in our lives."

- St. Apollinaris of Hierapolis