That no man go beyond, and defraud his brother in any matter,.... Or "in this matter", as the Syriac version. This is commonly understood of transgressing the bounds of justice and equity between men and men; and of cheating and defrauding in trade and business, by increasing or lessening the value and prices of goods by the buyer and seller, by not keeping to the bargain, contract, covenant, or sample, by false weights and measures, and by taking the advantage of the weakness and ignorance of men; all which is aggravated by dealing thus with a brother; see 1 Corinthians 6:8 and this hint is thought the rather necessary, since Thessalonica was a place of great trade and business. But the matter, or business referred to, is not trade, but the subject of chastity or uncleanness the apostle is speaking of, both before and after; and the phrases used either design the act of adultery, coveting a brother's wife, and lying with her, and so a defrauding and wronging of him by defiling his bed; or rather sodomitical practices, an unnatural lust and desire in men after men, and copulation with them; for υπερβαινειν, rendered, "go beyond", answers to בא על, "to go upon", or "lie with", so often used in Jewish writings for lying with women, men, and beasts, in an unlawful way. Thus, for instance y,
"these are to be burned, הבא על אשה, "he that lies with a woman", and her daughter, c.''
And again z,
"these are to be beaten, הבא על, "he that lies with" his sister, or his father's sister, c.''
And the word πλεονεκτειν, translated "defraud", signifies a greedy, insatiable, and unnatural lust and desire after a man, a brother, or the committing of sodomitical practices with greediness: see Ephesians 4:19 which abominable iniquities are dissuaded from by the following reasons,
because that the Lord is the avenger of all such or "with respect to all these things", as the Vulgate Latin and Syriac versions render it or "for all these things", as the Arabic and Ethiopic versions; as fornication, adultery, lasciviousness, and all sorts of abominable uncleanness. The person that commits these things the Lord avenges, either in this life, by the hand of the civil magistrate, who is the minister of God, a revenger to execute wrath on him that does evil; or by a violent death, as in the case of Zimri and Cozbi, and twenty four thousand more at the same time; or by some awful judgment from heaven, as in the case of Sodom and Gomorrah; or in the world to come; for the law of God is made and lies against such persons; these living and dying in such sins God will judge, to whom vengeance belongs; these shall not inherit the kingdom of God, but have their part and portion in the lake which burns with fire and brimstone.
As we have also forewarned you and testified; not by a former epistle, as if this was the second to them, and what follows the first, as Grotius thought; but they did this when they were in person with them, knowing that these abominable vices greatly prevailed in their city; therefore they bore their testimony against them, and exposed the evil of them, and warned them of the danger by them, so that they could not now plead ignorance. The Ethiopic version reads in the first person singular, "as I have before said unto you, and testified to you".
y Misna Sanhedrim, c. 9. sect. 1. z Misna Maccot, c. 3. sect. 1.