Even at Horeb you provoked the LORD to wrath, and the LORD was so angry with you that he was ready to destroy you.
That they might have no pretence to think that God brought them to Canaan for their righteousness, Moses here shows them what a miracle of mercy it was that they had not long ere this been destroyed in the wilderness: "Remember, and forget not, how thou provokedst the Lord thy God (Deu 9:7); so far from purchasing his favour, thou hast many a time laid...
Commenting on Deuteronomy 9:7-29
Also in Horeb ye provoked the Lord to wrath,.... The word "also" shows that they had provoked him before, but this instance is given as a very notorious one; here they made the golden calf and worshipped it, while Moses was on the mount with God, receiving instructions from him for their good.
Also in Horeb--rather, "even in Horeb," where it might have been expected they would have acted otherwise.