1 Nephi 8:19. Rod of Iron
The “rod of iron” in 1 Nephi 8:19 was borrowed from Revelation 12:52, which, being in the New Testament, was unavailable to the Nephites, who left Jerusalem six centuries before Christ’s birth.
The expression first appears in Psalm 2:9, which is quoted in Revelation 2:27 and then reappears in Revelation 12:5 and 19:15.