Deuteronomy 9:25 in the King James Version
Thus I fell down before the LORD forty days and forty nights, as I fell down at the first; because the LORD had said he would destroy you.
Context
24 You have been rebellious against the LORD from the day that I knew you.
25 So I fell down before the LORD the forty days and forty nights that I fell down, because the LORD had said he would destroy you.
26 I prayed to the LORD, and said, “Lord GOD, don’t destroy your people and your inheritance that you have redeemed through your greatness, that you have brought out of Egypt with a mighty hand.