Catholic Activity: Jesse Tree, Day 15 - Jonah
And Jonah began to enter into the city after one day's journey: and he cried and said: Yet forty days and Ninive shall be destroyed. And the men of Ninive believed in God: and they proclaimed a fast, and put on sackcloth from the greatest to the least.
As Jonah remained in the whale for three days, so Christ remained three days in the earth after His death.
Recommended Readings: Jonah 1:11-15