Matthew 12:40

for as Jonah was in the belly of the whale three days and three nights; so shall the Son of man be in the heart of the earth three days and three nights.

Matthew 16:4

A wicked and adulterous generation seeketh a sign; and no sign shall be given to it, but the sign of the prophet Jonah. And he left them, and departed.

Luke 11:30

For as Jonas was a sign to the Ninevites, so shall the Son of man also be to this generation.

Treasury of Scripture Knowledge

Summary

Now the LORD had prepared a great fish to swallow up Jonah. And Jonah was in the belly of the fish three days and three nights.

General references

Bible References

In

Matthew 12:40
for as Jonah was in the belly of the whale three days and three nights; so shall the Son of man be in the heart of the earth three days and three nights.
Matthew 16:4
A wicked and adulterous generation seeketh a sign; and no sign shall be given to it, but the sign of the prophet Jonah. And he left them, and departed.
Luke 11:30
For as Jonas was a sign to the Ninevites, so shall the Son of man also be to this generation.

General references

Luke 11:30
For as Jonas was a sign to the Ninevites, so shall the Son of man also be to this generation.