which is the principal, leading, and governing faculty of the soul; and which being enlightened by the Spirit of God, a man knows himself, Christ Jesus, and the things of the Spirit, the truths of the Gospel, and receives and values them.
The "soul" may include the will and affections, which are influenced by the understanding; and in a regenerate man the will is brought to a resignation to the will of God, and the affections are set upon divine things, and the body is the instrument of performing religious and spiritual exercises: and these the apostle prays may bepreserved blameless; not that he thought they could be kept from sinning entirely in thought, word, or deed; but that they might be preserved in purity and chastity from the gross enormities of life, and be kept from a total and final falling away, the work of grace be at last completed on the soul and spirit, and the body be raised in incorruption, and glory; and both at the coming of Christ be presented faultless, and without blame, without spot or wrinkle, or any such thing, first to himself, and then to his Father.
Aben Ezra in Exod. xxxi. 18. Zohar in Lev. fol. 29.