“The Rod of Iron”
Joseph F. McConkie, Robert L. Millet
Nephi explained that the rod of iron seen in his father’s dream was the word of God, to which those who desire to be saved must hold fast (see JST, Revelation 19:15; 1 Nephi 11:4-6).
Doctrinal Commentary on the Book of Mormon, Vol. 1
References
1 Nephi 15:21–36