15 Then Moses turned and went down from the mountain with the two tablets of the testimony in his hand, tablets that were written on both sides; on the front and on the back they were written. 16 The tablets were the work of God, and the writing was the writing of God, engraved on the tablets. 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 tablets out of his hands and broke them at the foot of the mountain. 20 He took the calf that they had made and burned it with fire and ground it to powder and scattered it on the water and made the people of Israel drink it.
Matthew Henry's Commentary on Exodus 32:15-20
Commentary on Exodus 32:15-20
(Read Exodus 32:15-20)
What a change it is, to come down from the mount of communion with God, to converse with a wicked world. In God we see nothing but what is pure and pleasing; in the world nothing but what is sinful and provoking. That it might appear an idol is nothing in the world, Moses ground the calf to dust. Mixing this powder with their drink, signified that the backslider in heart should be filled with his own ways.