Deuteronomy 9:21
And I took your sin, the calf which ye had made, and burnt it with fire, and stamped it, and ground it very small, even until it was as small as dust: and I cast the dust thereof into the brook that descended out of the mount. And I took your sin, the calf which ye had made, and burnt it with fire, and stamped it, and ground it very small, even until it was as small as dust: and I cast the dust thereof into the brook that descended out of the mount.
Deuteronomy 9:21 is part of Moses's rehearsal before Israel crossed the Jordan of what God had done for them and of the lessons they were to remember. It belongs to the account of Israel making and worshiping the golden calf shortly after the Ten Commandments were proclaimed from Sinai. After Moses was called up into the mount to receive the law written on two tables of stone, he came down to find the people worshiping the calf, broke the tables, caused the leading idolaters to be slain, and asked God to pardon the rest.
The verse belongs to the account of Moses's second forty-day stay on the mountain in connection with his intercession that God would not destroy Israel for its sin. God told Moses to hew a second set of tables and bring them into the mount, and at the end of a second period of forty days gave him a second copy of the law written on stone. The passage shows that the Sabbath shares with the other precepts the honor of being once publicly proclaimed by the voice of God and twice written by the finger of God, with the added honor of being founded on the example of God himself.