Longer Catechism (Orthodox) 7.220

Chapter 7 — Part I — Article V (Of the Resurrection)

Section 220. Q. Is this also in the Scripture of the Old Testament, that Jesus Christ should rise again precisely on the third day? A. A prophetic type of this was set forth in the Prophet Jonah: And Jonah was in the belly of the fish three days and three nights. Jonah i. 17.