Christ’s purpose here in enumerating different parts of one’s being is simply another way of saying that love for God, if truly present, will permeate every aspect of the being.

 Jesus quotes from Deut. 6:5 (see on Luke 10:27). There must first be love in the heart before a person can, in the strength and by the grace of Christ, begin to observe the precepts of God’s law (cf. Rom. 8:3, 4). Obedience without love is as impossible as it is worthless. But where love is present a person will automatically set out to order his life in harmony with the will of God as expressed in His commandments (see on John 14:15; 15:10).