'Three Days' in the Bible

And as for the asses that thou didst lose three days ago, set not thy heart on them; for they are found. And on whom is all the desire of Israel set? Is it not on thee, and on all thy father's house?

And David answered the priest and said to him, Yes indeed, women have been kept from us about these three days, since I came out, and the vessels of the young men are holy, and the bread is in a manner common, and the more so, because to-day new is hallowed in the vessels.

and gave him a piece of fig-cake and two raisin-cakes, and he ate, and his spirit came again to him; for he had eaten no bread, nor drunk any water, for three days and three nights.

And David said to him, To whom belongest thou? and whence art thou? And he said, I am a young man of Egypt, servant of an Amalekite; and my master left me, because three days ago I fell sick.