'Forty' in the Bible

And Cainan liveth after his begetting Mahalaleel eight hundred and forty years, and begetteth sons and daughters.

for after other seven days I am sending rain on the earth forty days and forty nights, and have wiped away all the substance that I have made from off the face of the ground.'

and the shower is on the earth forty days and forty nights.

And the deluge is forty days on the earth, and the waters multiply, and lift up the ark, and it is raised up from off the earth;

And it cometh to pass, at the end of forty days, that Noah openeth the window of the ark which he made,

peradventure there are lacking five of the fifty righteous -- dost Thou destroy for five the whole of the city?' and He saith, 'I destroy it not, if I find there forty and five.'

And he addeth again to speak unto Him and saith, 'Peradventure there are found there forty?' and He saith, 'I do it not, because of the forty.'

and Isaac is a son of forty years in his taking Rebekah, daughter of Bethuel the Aramaean, from Padan-Aram, sister of Laban the Aramaean, to him for a wife.

And Esau is a son of forty years, and he taketh a wife, Judith, daughter of Beeri the Hittite, and Bashemath, daughter of Elon the Hittite,

suckling camels and their young ones thirty, cows forty, and bullocks ten, she-asses twenty, and foals ten;

and Jacob liveth in the land of Egypt seventeen years, and the days of Jacob, the years of his life, are an hundred and forty and seven years.

and they fulfil for him forty days, for so they fulfil the days of the embalmed, and the Egyptians weep for him seventy days.