For in seven days I will send rain on the earth forty days and forty nights, and every living thing that I have made I will blot out from the face of the ground.”

And rain fell upon the earth forty days and forty nights.

The flood continued forty days on the earth. The waters increased and bore up the ark, and it rose high above the earth.

At the end of forty days Noah opened the window of the ark that he had made

Suppose five of the fifty righteous are lacking. Will you destroy the whole city for lack of five?” And he said, “I will not destroy it if I find forty-five there.”

Again he spoke to him and said, “Suppose forty are found there.” He answered, “For the sake of forty I will not do it.”

and Isaac was forty years old when he took Rebekah, the daughter of Bethuel the Aramean of Paddan-aram, the sister of Laban the Aramean, to be his wife.

When Esau was forty years old, he took Judith the daughter of Beeri the Hittite to be his wife, and Basemath the daughter of Elon the Hittite,

thirty milking camels and their calves, forty cows and ten bulls, twenty female donkeys and ten male donkeys.

Forty days were required for it, for that is how many are required for embalming. And the Egyptians wept for him seventy days.