Roman Catechism 7.26

Chapter 7 — Part I: The Creed — Article V: He Descended into Hell; the Third Day He Rose Again from the Dead

Section 26. Hence it is that our Lord very frequently spoke to His disciples of His Resurrection, and seldom or never of His Passion without adverting to His Resurrection. Thus, when He said: The son of man . . . shall be delivered to the Gentiles, and shall be mocked, and scourged, and spit upon; and after they have scourged him, they will put him to death; He added: and the third day he shall rise again.' Also when the Jews called upon Him to give an attestation of the truth of His doctrine by some miraculous sign He said: A sign shall not be given to them, but the sign of Jonas the prophet. For as Jonas was in the whales belly three days and three nights: so shall the son of man be in the heart of the earth three days and three nights.