'Three Days and Three Nights' in the Bible

They gave him a piece of fig cake and two clusters of raisins, and he ate; then his spirit revived. For he had not eaten bread or drunk water for three days and three nights.

And the Lord appointed a great fish to swallow Jonah, and Jonah was in the stomach of the fish three days and three nights.

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.