'Forty Days' in the Bible

For yet seven days, and I will give rain upon the earth forty days and forty nights: and I will wipe out every living thing which I made from the face of the earth.

And the rain shall be upon the earth forty days and forty nights.

And the flood shall be forty days upon the earth, and the waters shall multiply, and shall take up the ark, and it shall be lifted up from above the earth.

And it shall be from the end of forty days Noah shall open the window of the ark which he made.

And they will fill up forty days for him: for so will they fill up the days of the embalmed: and the Egyptians will weep for him seventy days.