Deuteronomy 9:18-19

18And I fell down before the Lord, as at the first, forty days and forty nights; I neither ate bread nor drank water, because of all your sin which you committed in doing wickedly in the sight of the Lord, to provoke Him to anger.

19For I was afraid of the anger and hot displeasure with which the Lord was angry with you, to destroy you. But the Lord listened to me at that time also.