c. 386–397 · John Chrysostom, Commentary on Galatians (In epistulam ad Galatas commentarius) 5
Here some make the charge that the Apostle has divided man into two parts, and that he states the essence of which he is compounded to be conflicting with itself, and that the body has a contest with the soul. But this is not so, most certainly; for by “the flesh,” he does not mean the body; if he did, what would be the sense of the clause immediately following, “for it lusteth,” he says, “against the Spirit?” yet the body moves not, but is moved, is not an agent, but is acted upon. How then does it lust, for lust belongs to the soul not to the body, for in another place it is said, “My soul longeth,” (Ps. lxxxiv. 2.) and, “Whatsoever thy soul desireth, I will even do it for thee,” (1 Sam. xx. 4.) and, “Walk not according to the desires of thy heart,” and, “So panteth my soul.” (Ps. xlii. 1.) Wherefore then does Paul say, “the flesh lusteth against the Spirit?” he is wont to call the flesh, not the natural body but the depraved will, as where he says, “But ye are not in the flesh, but in the Spirit,” (Rom. viii. 8, 9.) and again, “They that are in the flesh cannot please God.”