21 And Moses said to Aaron, What did the people do to you that you let this great sin come on them? 22 And Aaron said, Let not my lord be angry; you have seen how the purposes of this people are evil. 23 For they said to me, Make us a god to go before us: as for this Moses, who took us up out of the land of Egypt, we have no idea what has come to him. 24 Then I said to them, Whoever has any gold, let him take it off; so they gave it to me, and I put it in the fire, and this image of an ox came out. 25 And Moses saw that the people were out of control, for Aaron had let them loose to their shame before their haters: 26 Then Moses took his place at the way into the tents, and said, Whoever is on the Lord's side, let him come to me. And all the sons of Levi came together to him. 27 And he said to them, This is the word of the Lord, the God of Israel: Let every man take his sword at his side, and go from one end of the tents to the other, putting to death his brother and his friend and his neighbour. 28 And the sons of Levi did as Moses said; and about three thousand of the people were put to death that day. 29 And Moses said, You have made yourselves priests to the Lord this day; for every one of you has made the offering of his son and his brother; the blessing of the Lord is on you this day.
Matthew Henry's Commentary on Exodus 32:21-29
Commentary on Exodus 32:21-29
(Read Exodus 32:21-29)
Never did any wise man make a more frivolous and foolish excuse than that of Aaron. We must never be drawn into sin by any thing man can say or do to us; for men can but tempt us to sin, they cannot force us. The approach of Moses turned the dancing into trembling. They were exposed to shame by their sin. The course Moses took to roll away this reproach, was, not by concealing the sin, or putting any false colour upon it, but by punishing it. The Levites were to slay the ringleaders in this wickedness; yet none were executed but those who openly stood forth. Those are marked for ruin who persist in sin: those who in the morning were shouting and dancing, before night were dying. Such sudden changes do the judgments of the Lord sometimes make with sinners that are secure and jovial in their sin.