Nope. This isn’t going to be a Sherlock Holmes The Sign of the Four (or Three, for you BBC fans). Sorry.
Tony Stark: JARVIS, have you heard the tale of Jonah?
Jarvis: I wouldn’t consider him a role model.
[Iron Man flies through a Leviathan]
Have you heard of the sign of Jonah? In Matthew 12:40, Jesus says: “For as Jonah was in the belly of the great fish for three days and three nights, so will the Son of Man be in the heart of the earth for three days and three nights.”
Jesus was predicting his death and resurrection, and relating it back to Jonah. He was telling the Pharisees that this would be the sign that he would give them. (Matthew 12:38-39)
Jesus predicted his death and his resurrection. Don’t harden your heart like the Pharisees did. Believe.