I fell down forty days — The same as were mentioned before, Deuteronomy 9:18, as appears by comparing this with Exodus, where this history is more fully related, and where this is said to be done twice only.
Related Commentaries of Deuteronomy 9:25
Deuteronomy 9:25
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.