The anonymous prophet quoted by Nephi in 1 Nephi 22:15-17 was presumably an author whose words were found on the brass plates. He presents a vision of the future where evil is eradicated. In verse 15, the prophet foretells the destruction of the wicked, likening them to stubble set ablaze, symbolizing the triumph of divine justice. Nephi includes this prophecy to assure the righteous of the eventual downfall of evil influences.
In verse 16, the prophet describes the outpouring of God's wrath on the wicked while safeguarding the righteous. Nephi uses this reference to emphasize the importance of faith in the face of adversity, offering hope and assurance to believers that they are protected by divine power.
Finally, verse 17 reinforces the theme of divine preservation, promising the salvation of the righteous even amid catastrophic events. Nephi includes this message to strengthen the resolve of the faithful, highlighting the enduring promise of redemption amidst trials.