And he shall pass over - Margin, 'His rock shall pass away for fear.' The Hebrew would bear this, but it does not convey a clear idea. The sense seems to be this. The word rendered 'stronghold' (Hebrew, 'His rock') denotes his fortifications, or the places of strength in which he trusted. Probably the Assyrian monarch had many such places which he regarded as perfectly secure, both in the limits of his own kingdom, and on the line of his march toward Judea. Those places would naturally be made strong, in order to afford a refuge in case of a defeat. The idea here is, that so great would be his alarm at the sudden destruction of his army and the failure of his plans, that in his flight he would "pass over" or "beyond" these strong places; he would not even stop to take refuge there and reorganize his scattered forces, but would flee with alarm "beyond" them, and make his way to his own capital. This appears to have been most strikingly fulfilled (see Isaiah 37:37).

And his princes - Those, perhaps, that ruled over his dependent provinces.

Shall be afraid of the ensign - That is, of any standard or banner that they saw. They would suppose that it was the standard of an enemy. This denotes a state of great consternation, when all the princes and nobles under the command of the Assyrian would be completely dismayed.

Whose fire is in Zion ... - That is, whose altar is there, and always burns there. That was the place where he was worshipped, and it was a place, therefore, which he would defend. The meaning is, that they would be as certainly destroyed as the God whose altar was in Jerusalem was a God of truth, and would defend the place where he was worshipped.

And his furnace ... - (see the note at Isaiah 29:1). Where his altar continually burns. The word rendered 'furnace' (תנור tannûr) means properly a baking oven Exodus 8:3; Leviticus 2:4; Leviticus 7:9; Leviticus 11:35. This was either a large conical pot which was heated, in which the cakes were baked at the sides; or an excavation made in the earth which was heated by putting wood in it, and when that was removed, the dough was put in it. Perhaps the whole idea here is, that Yahweh had a home in Jerusalem, with the usual appendages of a house; that his fire and his oven were there, an expression descriptive of a dwelling-place. If so, then the meaning is, that he would defend his own home, and that the Assyrian could not expect to prevail against it.

And he shall pass over to his strong hold for fear,.... This is said of the king of Assyria, departing in haste from the siege of Jerusalem, to some strong hold in his own country, particularly his strong city Nineveh, for fear of the angel, and destruction following him; nor could he think himself safe, until he had got there. Some render it (and the original will bear it), "and his rock shall pass over for fear" (a); his mighty men, his men of valour, in whom he trusted, and put his confidence, who were his strength, on which he depended; these, as many as were left of them, fled away. So the Targum,

"his princes shall flee for fear;''

though these are expressed in the next clause:

and his princes shall be afraid of the ensign; any ensign or standard they saw, supposing it to be a detachment of the Jews in pursuit of them; or not daring afterwards to face any enemy with their banners displayed: or rather were terrified at the sight of the standard erected by the angel in the air, and at the slaughter of their companies under them in the camp:

saith the Lord, whose fire is in Zion, and his furnace in Jerusalem; who keeps house there, and therefore will defend it. Some, as Aben Ezra and others, think reference is had to the altar of the Lord, where the fire was kept continually burning, and sacrifices were offered up to him, and therefore being the place of his worship, he would take care of it; but rather it seems to denote the fire of God's wrath, to defend his people, and destroy his enemies, Zechariah 2:5. The Targum is,

"whose lustre is in Zion to them that do the law, and a burning furnace of fire to them that transgress his word.''

The Jews, in their Talmud (b), interpret the "fire" of hell, and the "furnace" of the gate of hell.

(a) "et rupes ejus prae pavoro transibit", Forerius. So Cocceius and Ben Melech; with which the version of Junius and Tremellius agrees. (b) T. Bab. Erubim, fol. 19. 1.

And he shall pass over to his {i} strong hold for fear, and his princes shall be afraid of the ensign, saith the LORD, whose {k} fire is in Zion, and his furnace in Jerusalem.

(i) This was accomplished soon after when Sennacherib's army was discomfited, and he fled to his castle in Nineveh for comfort.

(k) To destroy his enemies.

31:9 He - Sennacherib shall flee away, from Jerusalem, to his strong city of Nineveh. The ensign - Of the Lord's ensign, which he hath lifted up against them. Whose fire - Who is, and will appear to be in Zion, like a fire to defend his people, and to consume their enemies.

he...: Heb. his rock shall pass away for fear

his strong hold: or, his strength

9. Rather, "shall pass beyond his strongholds"; he Shall not stop to take refuge in it through fear (Jud 20:47; Jer 48:28) [Gesenius].

ensign-the banner of Jehovah protecting the Jews [Maurer].

fire . furnace-"light" and "fire," namely, of Jehovah's altar at Jerusalem (Isa 29:1). Perhaps "furnace," as distinguished from "fire," may mean that His dwelling-place (His hearth) was at Jerusalem (compare Isa 4:5); or else the fiery furnace awaiting all the enemies who should attack Jerusalem.

31:6-9 They have been backsliding children, yet children; let them return, and their backslidings shall be healed, though they have sunk deep into misery, and cannot easily recover. Many make an idol of their silver and gold, and by the love of that are drawn from God; but those who turn to God, will be ready to part with it. Then, when they have cast away their idols, shall the Assyrian fall by the sword of an angel, who strikes more strongly than a mighty man, yet more secretly than a mean man. God can make the stoutest heart to tremble. But if we keep up the fire of holy love and devotion in our hearts and houses, we may depend upon God to protect us and them.