An angelic messenger appears to Daniel with a specific mission to reveal the long-term destiny of the Jewish people. The angel arrives to grant Daniel a deep understanding of what lies ahead, explaining his immediate purpose for coming to share this knowledge [ביאור שטיינזלץ]. He explains that while he currently has the power to overcome the angelic prince of the Persian empire and ensure that Persia treats Israel with kindness, this protection is not permanent. In the future, other empires will rise to power. The angel will not be able to defeat these subsequent kingdoms, and they will oppress and enslave the Jewish people [מלבי״ם].
Although the upcoming events might seem to unfold by chance, this is merely a reflection of human perception. People often attribute history to blind luck when they fail to grasp the true reasons behind events. In truth, there is no such thing as coincidence; every single event unfolds exactly according to the decree of God [מצודת דוד]. The specific events being revealed are destined for the very end of days, pointing directly to the final era of history [יוסף אבן יחיא].
The primary approach among commentators is that this encounter introduces an entirely new revelation. Daniel has already experienced visions of future empires, but this new prophecy is meant to show him details that have never been disclosed before. This upcoming vision is intended for a time far off, stretching deep into the future [מצודת ציון].