'Forty' in the Bible

And after Kenan had fathered Mahalalel, he lived eight hundred and forty years, and fathered sons and daughters.

For {within seven days} I will send rain upon the earth [for] forty days and forty nights. And I will blot out all the living creatures that I have made from upon the face of the ground."

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

And the flood came forty days and forty nights upon the earth. And the waters increased, and lifted the ark, and it rose up from the earth.

And it happened [that] at the end of forty days Noah opened the window of the ark that he had made.

And {once again he spoke} to him and said, "What if forty are found there?" And he answered, "I will not do [it] on account of the forty."

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, as his wife.

And [when] Esau was forty years old he took as wife Judith, daughter of Beeri the Hittite, and Basemath, daughter of Elon the Hittite.

thirty milk camels with their young, forty cows, ten bulls, twenty female donkeys, and ten male donkeys.

Forty days {were required for it}, for thus [are] the days {required for} embalming. And the Egyptians wept for him seventy days.