Deuteronomy 9:25 in the World English Bible
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.
Context
24 Ye have been rebellious against the LORD from the day that I knew you.
25 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.
26 I prayed therefore unto the LORD, and said, O Lord GOD, destroy not thy people and thine inheritance, which thou hast redeemed through thy greatness, which thou hast brought forth out of Egypt with a mighty hand.