Human anger and pride often appear as uncontrollable, threatening forces. Yet, ultimately, these very emotions become instruments that reveal the power and providence of God. There is a vast gap between the weakness of human rage and the strength and restraint of the Creator.
The primary approach among commentators is that the fury of the wicked inevitably leads to universal praise of God. When evil people display their anger out of a false sense of power, God causes them to stumble and brings them to justice, proving that their rage is entirely empty. Consequently, humanity—and even the wicked themselves, against their will—surrender and praise God [רש״י, רד״ק, מצודת דוד, מאירי, ביאור שטיינזלץ]. A historical example is Nebuchadnezzar, whose blinding anger led him to throw Hananiah, Mishael, and Azariah into the fiery furnace, but who was ultimately forced to praise God [רש״י]. A different perspective suggests that this praise stems directly from comparing human nature to the nature of the Creator. Unlike flesh-and-blood humans who are often incapable of controlling their temper or stopping their rage, God acts with profound restraint and patience. Therefore, the very existence of explosive human anger serves as a reason to thank God that He does not rush to punish with the same destructive fury a human would use [אלשיך, מלבי״ם].
As for the anger that is left over, commentators offer different ways to understand how it is handled. One approach explains that God actively ties up, binds, and halts the remaining anger of the nations and the wicked. He prevents them from executing their furious plans and destroying Israel [רש״י, רד״ק, אלשיך, מצודת דוד, מאירי, ביאור שטיינזלץ, מלבי״ם]. Just as a belt tightly holds something in place, God restricts their lingering hostility. Some see this as a glimpse into the future, anticipating that after the great vengeance in the war of Gog and Magog, the surviving nations will be struck with awe of God and will completely hold back their anger [רד״ק].
Another interpretation applies the concept of strapping on a belt directly to God Himself. Because human anger is ultimately powerless and worthless, the true capacity for righteous fury belongs exclusively to God. He alone has the ultimate power to arm Himself with wrath and jealousy to exact justice upon His enemies [רש״י, ביאור שטיינזלץ]. Finally, a different view suggests that the extreme, destructive anger of human leaders—such as Sennacherib, who sought to annihilate everything in his path—actually prompts God to hold back and restrain His own remaining anger, ensuring He does not go on to destroy additional nations [מלבי״ם].