Deuteronomy 9:15-18

So I turned and came down from the mount, and the mount burned with fire: and the two tables of the covenant were in my two hands. And I looked, and, behold, ye had sinned against the LORD your God, and had made you a molten calf: ye had turned aside quickly out of the way which the LORD had commanded you. And I took the two tables, and cast them out of my two hands, and brake them before your eyes. And I fell down before the LORD, as at the first, forty days and forty nights: I did neither eat bread, nor drink water, because of all your sins which ye sinned, in doing wickedly in the sight of the LORD, to provoke him to anger.