Commenting on D&C 59:5-6:
5-6. Our Lord has declared that these are the greatest commandments in
the Law, because upon them “hang” all the Law and the Prophets. The Word of God
presupposes and depends on love of God and fellowmen. If there is no such love,
laws and instructions are of but little avail.
Heart, might, mind, and strength] “Heart” stands for “emotions,” “sentiment.” “Might” here stands for “soul,”
the term used in Matthew 22:37, and means the spiritual faculties. “Mind”
refers to the intellect, and “strength” to the physical attributes. This
commandment enjoins on us to love our heavenly Father so that our entire beings—our
emotions, our spiritual faculties, our mental and physical activities are all
devoted to Him and His service.
In Deuteronomy 6:5, the great commandment reads “Heart,” “soul,” and “might”;
Matthew has, “Heart,” “soul,” and “mind”; Mark has, “Heart,” “soul,” “mind,”
and Luke, “Heart,” “soul,” “strength,” and “mind.” In the Doctrine and
Covenants the text differs somewhat from all. When the Spirit of the Lord
speaks through a human instrument, He acts independently, even when proclaiming
truths formerly revealed. Strictly speaking, the Holy Spirit does not quote the
Scriptures, but gives Scripture. (Hyrum M. Smith and Janne M. Sjodahl, The
Doctrine and Covenants: Containing Revelations Given to Joseph Smith Jr., the
Prophet, with an Introduction and Exegetical Notes [Salt Lake City: The
Deseret News Press, 1945], 438-49, emphasis in bold added)
