Matthew 12:40

for as Jonas was three days and three nights in the whale's belly, so shall the Son of man be three days and three nights in the heart of the earth.

Matthew 16:21

And from that time began Jesus to acquaint his disciples, that He must go to Jerusalem and suffer many things from the elders, and chief priests, and scribes; and be put to death, and be raised again on the third day.

Treasury of Scripture Knowledge

Summary

And it came to pass in the third year, that Jehoshaphat the king of Judah came down to the king of Israel.

Bible References

In the third

Matthew 12:40
for as Jonas was three days and three nights in the whale's belly, so shall the Son of man be three days and three nights in the heart of the earth.
Matthew 16:21
And from that time began Jesus to acquaint his disciples, that He must go to Jerusalem and suffer many things from the elders, and chief priests, and scribes; and be put to death, and be raised again on the third day.