Deuteronomy 9:8

Also in Horeb ye provoked the Lord Rather, even in Horeb; for there is an emphasis in this. Even when your miraculous deliverance out of Egypt was fresh in your memories; when God had but newly manifested himself to you, and delivered you the law in so stupendous and awful a manner, and with such visible displays of his divine majesty; when he had just taken you into covenant with himself, and was actually conferring still further mercies upon you.