The sense is, either, 1. Take, to wit. to thyself and thy assistance, all the heads, i.e. the judges, as they are called Numbers 25:5, or rulers, of the people; and in their presence, and by their help, hang them, i.e. the people, now mentioned, to wit, such of them as were guilty, as was said Numbers 25:1. And this sense seems to be favoured by the next verse, where the execution of this command is mentioned, Moses said unto the judges of Israel, whom he had taken to himself and called together, Slay ye every one his man, i.e. each. of you execute this command of God, and hang up the delinquents under your several jurisdictions. Or,
2. Take, i.e. apprehend, all the heads, i.e. the chief, of the people, such as were chief, either in this transgression, or rather in place and power, who are singled out to this exemplary punishment either for their neglect in not preventing, restraining, or punishing the offenders according to their power and duty, or for their concurrence with others in this wickedness, which was more odious and mischievous in them than in others. And then this must be necessarily limited to such heads as were guilty, which is evident from the nature of the thing, and from the words of the verse. And so these heads of the people differ, as in name and title, so in place and dignity, from the judges of the people, Numbers 25:5, which may seem to note the superior magistrates, even the seventy elders, which, being persons of great worth and piety, chosen by God, and endowed with his Spirit, most probably kept themselves from this contagion, and therefore were fitter to punish others; and the heads of the people seem to be the inferior magistrates, the rulers of tens or hundreds, or the like, who as they did many of them partake with the people in other rebellions, so probably were involved in this guilt. Now these are to be hanged up as other malefactors and condemned persons were, Deuteronomy 21:23 2 Samuel 21:6. Before the Lord; to the vindication of God's honour and justice. Against the sun, i.e. publicly, as their sin was public and scandalous; and speedily, before the sun go down. But withal this phrase may signify, that these also must be taken down about sun-setting, as other malefactors were, Deuteronomy 21:23.