A prophetic vision pulls back the curtain on the political future of the Persian empire and its inevitable, violent collision with the rising power of Greece. This revelation begins with a declaration of absolute truth concerning the future and the decrees established for Israel [מלבי״ם, ביאור שטיינזלץ]. It is an unchangeable reality, permanently recorded in the writing of truth [מצודת דוד, יוסף אבן יחיא].
The prophecy outlines the ruling Persian dynasty, specifically pointing to three upcoming kings followed by a fourth. Identifying these rulers depends heavily on where the historical count begins. The primary approach among commentators is that the prophecy, delivered during the era of Cyrus, counts Cyrus himself, Ahasuerus, and Darius, the king who permitted the building of the Temple [רש״י, מצודת דוד]. According to this timeline, the fourth king is Darius the Persian, the son of Ahasuerus and Esther. He is considered the fourth if the count originates with Darius the Mede, who initially seized the empire from the Babylonian king Belshazzar [רש״י, מצודת דוד, יוסף אבן יחיא]. Other perspectives adjust this timeline. One view suggests the initial three kings do not include Cyrus, and the fourth is counted alongside him [מלבי״ם]. Another tradition outlines a total of five kings of Media and Persia, identifying the final king as the fourth ruler after Cyrus [אבן עזרא]. Additionally, historical accounts note that a son of Cyrus named Cambyses ruled briefly between Cyrus and Ahasuerus [רש״י].
The narrative then focuses on the final king of this dynasty, who is destined to accumulate wealth far surpassing that of any Persian ruler before him [מצודת דוד, יוסף אבן יחיא]. As he becomes deeply entrenched in his immense power and riches [מצודת דוד, ביאור שטיינזלץ], he will initiate a massive conflict with Greece.
Commentators offer two main interpretations of how this confrontation unfolds. The standard view is that the king will use his vast fortune to mobilize all his armies and subject nations, launching a massive frontal assault against Greece [רש״י, מצודת דוד, מלבי״ם]. This conflict is specifically framed as an attack on the kingdom of Greece, as the Greeks at that time were ruled by a system of judges rather than a single monarch [מלבי״ם]. However, this grand mobilization will backfire. By stirring up the world for war [ביאור שטיינזלץ], he sets the stage for his own downfall; ultimately, his own officials and subjects will betray and assassinate him [אבן עזרא]. An alternative approach understands the king's actions not as a mobilization, but as an emptying. In the devastating aftermath of the war, the Persian king will be forced to completely empty his treasuries, surrendering all his vast wealth and property to the victorious Greek empire [יוסף אבן יחיא].