What does Deuteronomy 9:20 mean?

I took hold of the two tablets, and threw them out of my two hands, and broke them before your eyes.

I fell down before Yahweh, as at the first, forty days and forty nights. I neither ate bread nor drank water, because of all your sin which you sinned, in doing that which was evil in Yahweh’s sight, to provoke him to anger.

For I was afraid of the anger and hot displeasure with which Yahweh was angry against you to destroy you. But Yahweh listened to me that time also.

I took your sin, the calf which you had made, and burned it with fire, and crushed it, grinding it very small, until it was as fine as dust. I threw its dust into the brook that descended out of the mountain.

At Taberah, and at Massah, and at Kibroth Hattaavah, you provoked Yahweh to wrath.

When Yahweh sent you from Kadesh Barnea, saying, “Go up and possess the land which I have given you,” you rebelled against the commandment of Yahweh your God, and you didn’t believe him, nor listen to his voice.