(29) For Moses had said, Consecrate yourselves.--Moses had explained to them that a brave behaviour under existing circumstances would be accepted as a "consecration," and would win for the tribe a semi-priestly character. His announcement was made good when the Levites were appointed to the service of the sanctuary in lieu of the firstborn (Numbers 3:6-13).

Verse 29. - For Moses had said. Moses, on giving them their commission (ver. 27), had told them, that their zeal in the matter would he a consecration, and would secure them God's blessing. They earned by it the semi-priestly position, which was soon afterwards assigned to them (Numbers 3:6-13).

CHAPTER 32:30-35

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.For Moses had said,.... To the Levites, when he first gave them their orders:

consecrate yourselves today to the Lord; devote yourselves to his service, by obeying his orders, slaying those, or the heads of them, who have cast so much contempt upon him as to worship the golden calf in his room; and which would be as acceptable to him as the offerings were, by which Aaron and his sons were consecrated to the Lord; and as these Levites were consecrated to his service this day, on this account:

even every man upon his son, and upon his brother; not sparing the nearest relation found in this idolatry, and for which the tribe of Levi is commended and blessed in the blessing of Moses, Deuteronomy 33:8 and as it follows:

that he may bestow a blessing upon you this day; which was their being taken into the service of God to minister to the priests in the sanctuary, to bear the vessels of the Lord, and for their maintenance to have the tithes of the people: this day was, according to the Jewish writers (s), the seventeenth of Tammuz, or June, on which day the Jews keep a fast upon this account.

(s) Sedar Olam Rabba, c. 6. p. 18. Pirke Eliezer, c. 46.