Exodus 32

19. Moses' anger waxed hot, and he cast the tables out of his hands--The arrival of the leader, like the appearance of a specter, arrested the revellers in the midst of their carnival, and his act of righteous indignation when he dashed on the ground the tables of the law, in token that as they had so soon departed from their covenant relation, so God could withdraw the peculiar privileges that He had promised them--that act, together with the rigorous measures that followed, forms one of the most striking scenes recorded in sacred history.

20. he took the calf which they had made, and burnt it in the fire, &c.--It has been supposed that the gold was dissolved by natron or some chemical substance. But there is no mention of solubility here, or in Deuteronomy 9:21 ; it was "burned in the fire," to cast it into ingots of suitable size for the operations which follow--"grounded to powder"; the powder of malleable metals can be ground so fine as to resemble dust from the wings of a moth or butterfly; and these dust particles will float in water for hours, and in a running stream for days. These operations of grinding were intended to show contempt for such worthless gods, and the Israelites would be made to remember the humiliating lesson by the state of the water they had drunk for a time [NAPIER]. Others think that as the idolatrous festivals were usually ended with great use of sweet wine, the nauseous draught of the gold dust would be a severe punishment (compare 2 Kings 23:6 2 Kings 23:15 , 2 Chronicles 15:16 , 34:7 ).

22. And Aaron said, Let not the anger of my lord wax hot--Aaron cuts a poor figure, making a shuffling excuse and betraying more dread of the anger of Moses than of the Lord (compare Deuteronomy 9:20 ).

25. naked--either unarmed and defenseless, or ashamed from a sense of guilt. Some think they were literally naked, as the Egyptians performed some of their rites in that indecent manner.

26-28. Moses stood in the gate of the camp, and said--The camp is supposed to have been protected by a rampart after the attack of the Amalekites.
Who is on the Lord's side? let him come unto me--The zeal and courage of Moses was astonishing, considering he opposed an intoxicated mob. The people were separated into two divisions, and those who were the boldest and most obstinate in vindicating their idolatry were put to death, while the rest, who withdrew in shame or sorrow, were spared.

29. Consecrate yourselves to-day to the Lord--or, "Ye have consecrated yourselves to-day." The Levites, notwithstanding the dejection of Aaron, distinguished themselves by their zeal for the honor of God and their conduct in doing the office of executioners on this occasion; and this was one reason that they were appointed to a high and honorable office in the service of the sanctuary.

30-33. Moses said unto the people, Ye have sinned a great sin--Moses labored to show the people the heinous nature of their sin, and to bring them to repentance. But not content with that, he hastened more earnestly to intercede for them.

32. blot me . . . out of thy book--an allusion to the registering of the living, and erasing the names of those who die. What warmth of affection did he evince for his brethren! How fully was he animated with the true spirit of a patriot, when he professed his willingness to die for them. But Christ actually died for His people ( Romans 5:8 ).

35. the Lord plagued the people, because they made the calf--No immediate judgments were inflicted, but this early lapse into idolatry was always mentioned as an aggravation of their subsequent apostasies.