Translate it: "Behold they whose rule was not to drink of the cup shall surely drink etc." It was not the ordinary manner of God's people to suffer from His wrath: but now when they are drinking of the wine-cup of fury Jeremiah 25:15, how can those not in covenant with Him hope to escape?

Art thou he that shall altogether go unpunished? - A similar form of speech appears, Jeremiah 25:29. Others, less wicked than thou, have been punished and canst thou expect to escape? Thou shalt not escape.

For thus saith the Lord,.... This that follows shows that what goes before is not said by way of promise and comfort, but threatening:

behold, they whose judgment was not to drink of the cup have assuredly drunken; meaning either some of the other nations, who had not dealt so ill with the Jews as the Edomites had, at least their sins were not so aggravated as theirs were; they being akin to the Jews, and having used them in a very injurious and scornful manner; or the Jews themselves, who, in comparison of them, had not deserved divine vengeance, signified by a cup, a portion of wrath, and punishment righteously allotted them, and which they had partook of, being carried captive into Babylon: for this is not to be understood strictly of proper justice, but in a comparative sense; for otherwise it was but just and right that they should be treated in the manner they were; only they were not so guilty as these were;

and art thou he that shalt altogether go unpunished? if lesser sinners are not let go free, how should it be thought that greater ones should? and especially if judgment had begun at God's own people, the wicked Edomite, could not expect to escape;

thou shalt not go unpunished, but thou shalt surely drink of it; the cup of wrath and vengeance; or have the just punishment inflicted on them threatened them.

For thus saith the LORD; {n} Behold, they whose judgment was not to drink of the cup have assuredly drank; and art thou he that shall altogether go unpunished? thou shalt not go unpunished, but thou shalt surely drink of it.

(n) I have not spared my own people and how should I pity you?

49:12 They - The Jews, who in comparison with others did not deserve to drink of the cup, yet have drank of it, and can you think to escape? When an Israelite hath not escaped the justice of God, an Edomite must not expect it.

12. (Compare Jer 25:15, 16, 29).

they whose judgment was not to drink of the cup-the Jews to whom, by virtue of the covenant relation, it did not belong to drink the cup. It might have been expected that they would be spared. He regards not the merits of the Jews, for they were as bad or worse than others: but the grace and adoption of God; it is just and natural ("judgment") that God should pardon His sons sooner than aliens [Calvin].

49:7-22 The Edomites were old enemies to the Israel of God. But their day is now at hand; it is foretold, not only to warn them, but for the sake of the Israel of God, whose afflictions were aggravated by them. Thus Divine judgments go round from nation to nation; the earth is full of commotion, and nothing can escape the ministers of Divine vengeance. The righteousness of God is to be observed amidst the violence of men.