Exodus 33:3; Exodus 33:5

3 Go up to a land flowing with milk and honey; but I will not go up among you, lest I consume you on the way, for you are a stiff-necked people."

5 For the LORD had said to Moses, "Say to the people of Israel, 'You are a stiff-necked people; if for a single moment I should go up among you, I would consume you. So now take off your ornaments, that I may know what to do with you.'"