Exodus 32:15-20; Exodus 32:27-29

15 And Moses turned, and went down from the mountain with the two tables of the testimony in his hands, tables that were written on both sides; on the one side and on the other were they written.

16 And the tables were the work of God, and the writing was the writing of God, graven upon the tables.

17 When Joshua heard the noise of the people as they shouted, he said to Moses, "There is a noise of war in the camp."

18 But he said, "It is not the sound of shouting for victory, or the sound of the cry of defeat, but the sound of singing that I hear."

19 And as soon as he came near the camp and saw the calf and the dancing, Moses' anger burned hot, and he threw the tables out of his hands and broke them at the foot of the mountain.

20 And he took the calf which they had made, and burnt it with fire, and ground it to powder, and scattered it upon the water, and made the people of Israel drink it.

27 And he said to them, "Thus says the LORD God of Israel, 'Put every man his sword on his side, and go to and fro from gate to gate throughout the camp, and slay every man his brother, and every man his companion, and every man his neighbor.'"

28 And the sons of Levi did according to the word of Moses; and there fell of the people that day about three thousand men.

29 And Moses said, "Today you have ordained yourselves for the service of the LORD, each one at the cost of his son and of his brother, that he may bestow a blessing upon you this day."