Deuteronomy 9:18
I fell down before Yahweh, as at the first, forty days and forty nights; I did neither eat bread nor drink water; because of all your sin which you sinned, in doing that which was evil in the sight of Yahweh, to provoke him to anger.
Exodus 34:28
He was there with Yahweh forty days and forty nights; he neither ate bread, nor drank water. He wrote on the tablets the words of the covenant, the ten commandments.
Deuteronomy 9:9
When I was gone up onto the mountain to receive the tables of stone, even the tables of the covenant which Yahweh made with you, then I stayed on the mountain forty days and forty nights; I did neither eat bread nor drink water.
Psalm 106:23
Therefore he said that he would destroy them, had Moses, his chosen, not stood before him in the breach, to turn away his wrath, so that he wouldn't destroy them.
Exodus 32:10-14
Now therefore leave me alone, that my wrath may burn hot against them, and that I may consume them; and I will make of you a great nation."
Deuteronomy 10:10
I stayed on the mountain, as at the first time, forty days and forty nights: and Yahweh listened to me that time also; Yahweh would not destroy you.
2 Samuel 12:16
David therefore begged God for the child; and David fasted, and went in, and lay all night on the earth.