Plead your cause. There was also a necessity that this should be added to the former doctrine; for when we associate with wicked men, they pour ridicule on our hope and charge us with folly, as if we were too simple-minded and credulous. Our faith is attacked and frequently shaken by jeers such as the following, "These people hang on the clouds, and believe things that are impossible and contrary to all reason." Since, therefore, the Jews, in their captivity, would hear such mockeries, it was of importance that they should be fortified by these warnings of the Prophet; and in order to give greater weight to this address, he comes forth of his own accord, for the sake of inspiring confidence, and challenges the Gentiles themselves, charging them to bring forward everything that could support their cause, as is usually done in courts of justice. Saith the king of Jacob. When he calls himself "the king of Jacob," he defies all idols, and shews that he undertakes the cause of his people, so as to be at length acknowledged to have vindicated his glory by delivering those who were unjustly oppressed. And yet the godly needed to possess a strong faith; for what was the aspect of the kingdom, when they were captives and so severely oppressed? This was also the reason why he formerly (verse 14) called them "the worm Jacob" and "dead men." But they comforted their hearts by that promise by which he formerly said that their root was concealed under ground, when he compared the people to a tree that had been cut down. "A branch shall spring from the stock of Jesse, and a sprout from his roots shall yield fruit." (Isaiah 11:1.) They beheld by the eyes of faith that kingly power which lay concealed; for it could not be seen by the bodily eyes or comprehended by the human understanding.

Produce your cause - This address is made to the same persons who are referred to in Isaiah 41:1 - the worshippers of idols; and the prophet here returns to the subject with reference to a further argument on the comparative power of Yahweh and idols. In the former part of the chapter, God had urged his claims to confidence from the fact that he had raised up Cyrus; that the idols were weak and feeble compared with him; and from the fact that it was his fixed purpose to defend his people, and to meet and refresh them when faint and weary. In the verses which follow Isaiah 41:21, he urges his claims to confidence from the fact that he alone was able to predict future events, and calls on the worshippers of idols to show their claims in the same manner. This is the 'cause' which is now to be tried.
Bring forth your strong reasons - Adduce the arguments which you deem to be of the greatest strength and power (compare the notes at Isaiah 41:1). The object is, to call on them to bring forward the most convincing demonstration on which they relied, of their power and their ability to save. The argument to which God appeals is, that he had foretold future events. He calls on them to show that they had given, or could give, equal demonstration of their divinity. Lowth regards this as a call on the idol-gods to come forth in person and show their strength. But the interpretation which supposes that it refers to their reasons, or arguments, accords better with the parallelism, and with the connection.

Bring forth your strong reasons "Produce these your mighty powers" - "Let your idols come forward which you consider to be so very strong. "Hieron. in loc. I prefer this to all other interpretations of this place; and to Jerome's own translation of it, which he adds immediately after, Afferte, si quid forte habetis. "Bring it forward, if haply ye have any thing." The false gods are called upon to come forth and appear in person; and to give evident demonstration of their foreknowledge and power by foretelling future events, and exerting their power in doing good or evil.

(r) Produce your cause, saith the LORD; bring forth your strong [reasons], saith the King of Jacob.
(r) He bids the idolaters to prove their religion and to bring forth their idols, that they may be tried whether they know all things, and can do all things, which if they cannot do, he concludes that they are not gods, but vile idols.

Produce your cause, saith the Lord,.... The Lord having comforted his people under their afflictions and persecutions from their enemies in the first times of Christianity, returns to the controversy between him and the idolatrous Heathens, and challenges them to bring their cause into open court, and let it be publicly tried, that it may be seen on what side truth lies:
bring forth your strong reasons, saith the King of Jacob; or King of saints, the true Israel of God, who acknowledge the Lord as their King and their God, and whom he rules over, protects and defends; and this title is assumed for the comfort of them, that though he is King over all the nations of the world, yet in an eminent and peculiar sense their King; and he does not style himself the God of Jacob, though he was, because this was the thing in controversy, and the cause to be decided, whether he was the true God, or the gods of the Gentiles; and therefore their votaries are challenged to bring forth the strongest reasons and arguments they could muster together, in proof of the divinity of their idols; their "bony" arguments, as the word (x) signifies; for what bones are to the body, that strong arguments are to a cause, the support and stability of it.
(x) os.

There needs no more to show the folly of sin, than to bring to notice the reasons given in defence of it. There is nothing in idols worthy of regard. They are less than nothing, and worse than nothing. Let the advocates of other doctrines than that of salvation through Christ, bring their arguments. Can they tell of a cure for human depravity? Jehovah has power which cannot be withstood; this he will make appear. But the certain knowledge of the future must be only with Jehovah, who fulfils his own plans. All prophecies, except those of the Bible, have been uncertain. In the work of redemption the Lord showed himself much more than in the release of the Jews from Babylon. The good tidings the Lord will send in the gospel, is a mystery hid from ages and generations. A Deliverer is raised up for us, of nobler name and greater power than the deliverer of the captive Jews. May we be numbered among his obedient servants and faithful friends.

A new challenge to the idolaters (see Isaiah 41:1, Isaiah 41:7) to say, can their idols predict future events as Jehovah can (Isaiah 41:22-25, &c.)?
your strong reasons--the reasons for idol-worship which you think especially strong.

There follows now the second stage in the suit. "Bring hither your cause, saith Jehovah; bring forward your proofs, saith the king of Jacob. Let them bring forward, and make known to us what will happen: make known the beginning, what it is, and we will fix our heart upon it, and take knowledge of its issue; or let us hear what is to come. Make known what is coming later, and we will acknowledge that ye are gods: yea, do good, and do evil, and we will measure ourselves, and see together." In the first stage Jehovah appealed, in support of His deity, to the fact that it was He who had called the oppressor of the nations upon the arena of history. In this second stage He appeals to the fact that He only knows or can predict the future. There the challenge was addressed to the worshippers of idols, here to the idols themselves; but in both cases both of these are ranged on the one side, and Jehovah with His people upon the other. It is with purpose that Jehovah is called the "King of Jacob,"as being the tutelar God of Israel, in contrast to the tutelar deities of the heathen. The challenge to the latter to establish their deity is first of all addressed to them directly in Isaiah 41:21, and then indirectly in Isaiah 41:22, where Jehovah connects Himself with His people as the opposing party; but in Isaiah 41:22 He returns again to a direct address. עצּמות are evidences (lit. robara, cf., ὀχυρώματα, 2-Corinthians 10:4, from עצם, to be strong or stringent; mishn. נתעצּם, to contend with one another pro et contra); here it signifies proofs that they can foresee the future. Jehovah for His part has displayed this knowledge, inasmuch as, at the very time when He threatened destruction to the heathen at the hands of Cyrus, He consoled His people with the announcement of their deliverance (Isaiah 41:8-20). It is therefore the turn of the idol deities now: "Let them bring forward and announce to us the things that will come to pass." the general idea of what is in the future stands at the head. Then within this the choice is given them of proving their foreknowledge of what is afterwards to happen, by announcing either ראשׁנות, or even בּאות. These two ideas, therefore, are generic terms within the range of the things that are to happen. Consequently הרשׁנות cannot mean "earlier predictions," prius praedicta, as Hitzig, Knobel, and others suppose. This explanation is precluded in the present instance by the logic of the context. Both ideas lie upon the one line of the future; the one being more immediate, the other more remote, or as the expression alternating with הבאות implies לאחור האתיּות, ventura in posterum ("in later times," compare Isaiah 42:23, "at a later period;" from the participle אתה, radical form אתי, vid., Ges. 75, Anm. 5, probably to distinguish it from אתות). This is the explanation adopted by Stier and Hahn, the latter of whom has correctly expounded the word, as denoting "the events about to happen first in the immediate future, which it is not so difficult to prognosticate from signs that are discernible in the present." The choice is given them, either to foretell "things at the beginning" (haggı̄dū in our editions is erroneously pointed with kadma instead of geresh), i.e., that which will take place first or next, "what they be" (quae et qualia sint), so that now, when the achărı̄th, "the latter end" (i.e., the issue of that which is held out to view), as prognosticated from the standpoint of the present, really occurs, the prophetic utterance concerning it may be verified; or "things to come," i.e., things further off, in later times (in the remote future), the prediction of which is incomparably more difficult, because without any point of contact in the present. They are to choose which they like (או from אוה, like vel from velle): "ye do good, and do evil," i.e., (according to the proverbial use of the phrase; cf., Zephaniah 1:12 and Jeremiah 10:5) only express yourselves in some way; come forward, and do either the one or the other. The meaning is, not that they are to stir themselves and predict either good or evil, but they are to show some sign of life, no matter what. "And we will measure ourselves (i.e., look one another in the face, testing and measuring), and see together," viz., what the result of the contest will be. השׁתּעה like התראה in 2-Kings 14:8, 2-Kings 14:11, with a cohortative âh, which is rarely met with in connection with verbs ל ה, and the tone upon the penultimate, the âh being attached without tone to the voluntative נשׁתּע in 2-Kings 14:5 (Ewald, 228, c). For the chethib ונראה, the Keri has the voluntative ונרא.