Jonah 1:17
But the LORD provided a great fish to swallow Jonah, and Jonah was inside the fish three days and three nights.
Matthew 12:40
For as Jonah was three days and three nights in the belly of a huge fish, so the Son of Man will be three days and three nights in the heart of the earth.
The Old and the New Covenant
ivarfjeld.com 
So how do we get goob friday? Oh yeah the.catholicks
Did not Jesus in the Old Covenant come to fulfill the Law and not to destroy it?