May the God of peace himself sanctify you completely. May your whole spirit, soul, and body be preserved blameless at the coming of our Lord Jesus Christ.
no one doubts that he speaks of his understanding and affection, and thus enumerates two departments of the soul. These two terms are conjoined in the Psalms in the same sense. This, also, corresponds better with Paul’s statement. For how is the whole man entire, except when his thoughts are pure and holy, when all his affections are right and properly regulated, when, in fine, the body itself lays out its endeavors and services only in good works? For the faculty of understanding is held by philosophers to be, as it were, a mistress: the affections occupy a middle place for commanding; the body renders obedience. We see now how well everything corresponds. For then is the man pure and entire, when he thinks nothing in his mind, desires nothing in his heart, does nothing with his body, except what is approved by God. As, however, Paul in this manner commits to God the keeping of the whole man, and all its parts, we must infer from this that we are exposed to innumerable dangers, unless we are protected by his guardianship. 