“Jacob And… Joseph”
Joseph F. McConkie, Robert L. Millet
According to the Hebrew tradition, father Lehi chose these two honored names to serve as memorials for his sons, it being his hope that they would pattern their lives after their righteous forebears (see Helaman 5:6).
Doctrinal Commentary on the Book of Mormon, Vol. 1
References
1 Nephi 18:7