Luke 11:30

For just as Jonah became a sign to the people of Nineveh, so will the Son of Man also be [a sign] to this generation.

Jonah 1:17

Now the Lord had prepared (appointed, destined) a great fish to swallow Jonah. And Jonah was in the stomach of the fish three days and three nights.

Jonah 2:10

So the Lord commanded the fish, and it vomited Jonah up onto the dry land.

Jonah 3:2-10

“Go to Nineveh the great city and declare to it the message which I am going to tell you.”

Matthew 12:40-42

for just as Jonah was three days and three nights in the belly of the sea monster, so will the Son of Man be three days and three nights in the heart of the earth.

Luke 24:46-47

and said, “And so it is written, that the Christ (the Messiah, the Anointed) would suffer and rise from the dead on the third day,

Treasury of Scripture Knowledge

Summary

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

Bible References

General references

Luke 24:46
and said, “And so it is written, that the Christ (the Messiah, the Anointed) would suffer and rise from the dead on the third day,
Jonah 1:17
Now the Lord had prepared (appointed, destined) a great fish to swallow Jonah. And Jonah was in the stomach of the fish three days and three nights.
Jonah 2:10
So the Lord commanded the fish, and it vomited Jonah up onto the dry land.
Jonah 3:2
“Go to Nineveh the great city and declare to it the message which I am going to tell you.”
Matthew 12:40
for just as Jonah was three days and three nights in the belly of the sea monster, so will the Son of Man be three days and three nights in the heart of the earth.