'Three Days and Three Nights' in the Bible

and they gave him a piece of a cake of figs, and two cakes of raisins, and, when he had eaten, his spirit came back unto him, - for he had neither eaten food, nor drunk water, three days and three nights.

Now Yahweh had appointed a great fish, to swallow up Jonah, - and Jonah was in the belly of the fish, three days and three nights.

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