Exodus 33:2-6

And I will send an angel before you and I will drive out the Canaanite, the Amorite, the Hittite, the Perizzite, the Hivite, and the Jebusite.

Go up to a land flowing with milk and honey; for I will not go up in your midst, because you are an obstinate people, and I might destroy you on the way.”

When the people heard this sad word, they went into mourning, and none of them put on his jewelry.

For the Lord had said to Moses, “Say to the sons of Israel, ‘You are an obstinate people; if I were to go up in your midst for just one moment, I would destroy you. So now, take off your jewelry that I may know what I shall do to you.’ ”

So the sons of Israel stripped themselves of their jewelry, from Mount Horeb onward.