ישעיהו, פרק נ״ה, פסוק ד׳

A universal vision is presented in which a chosen leader achieves global influence. Rather than settling for local rule, this figure serves as a moral compass and supreme authority for all nations. The primary approach among commentators is that this promise refers to the Messiah, a king from the house of David who will arise in the end of days [אבן עזרא, שד״ל, מצודת דוד, מלבי״ם]. However, others broaden this perspective, suggesting that David and his dynasty actually represent the entire nation of Israel [ביאור שטיינזלץ]. Another unique view proposes that the focus is on King David himself, positioned as a historical model who proves the power of repentance [אהבת יהונתן].

This leader's primary responsibility carries a dual meaning. On one hand, he acts as a figure of warning and rebuke. He cautions the nations of the world, corrects their behavior, administers punishment when necessary, and guides them toward true faith and the proper path [רש״י, רד״ק, שד״ל, מלבי״ם]. This warning is delivered publicly and clearly, functioning much like a formal legal notice so that the nations cannot deny it [רד״ק]. On the other hand, his role serves as a living testimony and proof. The eternal survival of the Davidic dynasty provides living evidence to the nations that God's word endures forever [מצודת דוד]. It stands as a testimony to God's existence and holiness [ביאור שטיינזלץ], and serves as absolute proof that there is no other true king in the world [אבן עזרא].

Beyond standing as a witness, the leader is granted direct authority over the nations of the world [מצודת ציון, ביאור שטיינזלץ]. He is appointed as a prince and a ruler holding true power [רש״י, מצודת ציון, ביאור שטיינזלץ]. In this capacity, he acts as an absolute commander, instructing the nations on how to conduct themselves. He leads them with the unquestioned authority of a master over his servants, ensuring that they follow his every directive [רד״ק, אבן עזרא, מצודת דוד]. Furthermore, this sweeping authority is not limited to the internal affairs of individual countries; it extends to issuing commands that regulate and resolve the relationships between different nations [מלבי״ם].