(2.) The aggravation of the crime charged upon their brethren is somewhat far-fetched: Is the iniquity of Peor too little for us? v. 17. Probably that is mentioned because Phinehas, the first commissioner in this treaty, had signalized himself in that matter (Num. xxv. 7), and because we may suppose they were not about the very place in which that iniquity was committed on the other side Jordan. It is good to recollect and improve those instances of the wrath of God, revealed from heaven against the ungodliness and unrighteousness of men, which have fallen out in our own time, and which we ourselves have been eye-witnesses of. He reminds them of the iniquity of Peor, [1.] As a very great sin, and very provoking to God. The building of this altar seemed but a small matter, but it might lead to an iniquity as bad as that of Peor, and therefore must be crushed in its first rise. Note, The remembrance of great sins committed formerly should engage us to stand upon our guard against the least occasions and beginnings of sin; for the way of sin is down-hill. [2.] As a sin that the whole congregation had smarted for: "There was a plague in the congregation of the Lord, of which, in one day, there died no fewer than 24,000; was not that enough for ever to warn you against idolatry? What! will you bring upon yourselves another plague? Are you so mad upon an idolatrous altar that you will run yourselves thus upon the sword's point of God's judgments? Does not our camp still feel from that sin and the punishment of it? We are not cleansed from it unto this day; there are remaining sparks," First, "Of the infection of that sin; some among us so inclined to idolatry that if you set up another altar they will soon take occasion from that, whether you intend it or no, to worship another God." Secondly, "Of the wrath of God against us for that sin. We have reason to fear that, if we provoke God by another sin to visit, he will remember against us the iniquity of Peor, as he threatened to do that of the golden calf, Exod. xxxii. 34. And dare you wake the sleeping lion of divine vengeance?" Note, It is a foolish and dangerous thing for people to think their former sins little, too little for them, as those do who add sin to sin, and so treasure up wrath against the day of wrath. Let therefore the time past suffice, 1 Pet. iv. 3.