Exodus 33:1-6

Then the LORD said to Moses, “You and the people you brought out of Egypt must leave this place. Go to the land that I promised with an oath to give to Abraham, Isaac, and Jacob when I said, ‘I will give that land to your descendants.’ I will send an angel to lead you, and I will force these people out of the land: the Canaanites, Amorites, Hittites, Perizzites, Hivites, and Jebusites. Go up to a fertile land. But I will not go with you, because I might destroy you on the way, since you are such a stubborn people.” When the people heard this bad news, they became very sad, and none of them put on jewelry. This was because the LORD had said to Moses, “Tell the Israelites, ‘You are a stubborn people. If I were to go with you even for a moment, I would destroy you. So take off all your jewelry, and I will decide what to do with you.’ ” So the people of Israel took off their jewelry at Mount Sinai.