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.

The people of Israel ate the manna forty years, till they came to a habitable land. They ate the manna till they came to the border of the land of Canaan.

Moses entered the cloud and went up on the mountain. And Moses was on the mountain forty days and forty nights.

and forty bases of silver you shall make under the twenty frames, two bases under one frame for its two tenons, and two bases under the next frame for its two tenons;

and their forty bases of silver, two bases under one frame, and two bases under the next frame.

So he was there with the Lord forty days and forty nights. He neither ate bread nor drank water. And he wrote on the tablets the words of the covenant, the Ten Commandments.

And he made forty bases of silver under the twenty frames, two bases under one frame for its two tenons, and two bases under the next frame for its two tenons.

and their forty bases of silver, two bases under one frame and two bases under the next frame.

The Year of Jubilee

“You shall count seven weeks of years, seven times seven years, so that the time of the seven weeks of years shall give you forty-nine years.

Report of the Spies

At the end of forty days they returned from spying out the land.

And your children shall be shepherds in the wilderness forty years and shall suffer for your faithlessness, until the last of your dead bodies lies in the wilderness.

According to the number of the days in which you spied out the land, forty days, a year for each day, you shall bear your iniquity forty years, and you shall know my displeasure.’

And the Lord's anger was kindled against Israel, and he made them wander in the wilderness forty years, until all the generation that had done evil in the sight of the Lord was gone.

“The cities that you give to the Levites shall be the six cities of refuge, where you shall permit the manslayer to flee, and in addition to them you shall give forty-two cities.

All the cities that you give to the Levites shall be forty-eight, with their pasturelands.

For the Lord your God has blessed you in all the work of your hands. He knows your going through this great wilderness. These forty years the Lord your God has been with you. You have lacked nothing.”’