'Nights' in the Bible

when I went up the mountain to receive the tables of stone, the tables of the covenant which Jehovah made with you, and I abode in the mountain forty days and forty nights, I ate no bread and drank no water, --

And it came to pass at the end of forty days and forty nights, that Jehovah gave me the two tables of stone, the tables of the covenant.

And I fell down before Jehovah, as at the first, forty days and forty nights, I ate no bread and drank no water, because of all your sin which ye had sinned, in doing what is evil in the eyes of Jehovah, to provoke him to anger.

So I fell down before Jehovah the forty days and forty nights, as I fell down; for Jehovah had said he would destroy you.

But I stood upon the mountain according to the former days, forty days and forty nights; and Jehovah listened unto me also at that time: Jehovah would not destroy thee.