But a suggestion which Bede makes, and which several modern commentators have followed, is well worth considering. St. James may be thinking of the demons which possessed human beings, rather than those which received or promoted idolatrous worship. Bede reminds us of the many demons who went out at Christ's command, crying out that He was the Son of God, and especially of the man with the legion among the Gadarenes, who expressed not only belief, but horror: "What have I to do with Thee, Jesus, Son of the most high God? I adjure Thee by God, that Thou torment me not." Without falling into the error of supposing that demons can mean demoniacs, we may imagine how readily one who had witnessed such scenes as those recorded in the Gospels might attribute to the demons the expressions of horror which he had heard in the words and seen on the faces of those whom demons possessed. Such expressions were the usual effect of being confronted by the Divine presence and power of Christ, and were evidence both of a belief in God and of a dread of Him. St. James, who was then living with the Mother of the Lord, and sometimes followed His Divine Brother in His wanderings, would be almost certain to have been a witness of some of these healings of demoniacs. And it is worth noting that the word which in the Authorized Version is rendered "tremble," and in the Revised "shudder" (φρίσσειν), expresses _physical horror_, especially as it affects the hair; and in itself it implies a body, and would be an inappropriate word to use of the fear felt by a purely spiritual being. It occurs nowhere else in the New Testament; but in the Septuagint we find it used in the Book of Job: "Then a spirit passed before my face; the hair of my flesh stood up" (iv. 15). It is a stronger word than either "fear" or "tremble," and strictly speaking can be used only of men and other animals.
This horror, then, expressed by the demons through the bodies of those whom they possess, is evidence enough of faith. Can faith such as that save any one? Is it not obvious that a faith which produces, not works of love, but the strongest expressions of fear, is not a faith on which any one can rely for his salvation? And yet the faith of those who refuse to do good works, because they hold that their faith is sufficient to save them, is no better than the faith of the demons. Indeed, in some respects it is worse. For the sincerity of the demons' faith cannot be doubted; their terror is proof of it: whereas the formal Christian has nothing but cold professions to offer. Moreover, the demons are under no self-delusion; they know their own terrible condition. For the formalist who accepts Christian truth and neglects Christian practice there is a dreadful awakening in store. There will come a time when "believe and shudder" will be true also of him. "But, before it is too late, willest thou to get to know, O vain man, that faith apart from works is barren?"
"Wilt thou know" does not do justice to the full meaning of the Greek (θέλεισ γνῶναι). The meaning is not, "I would have you know," but, "Do you wish to have acquired the knowledge?" You profess to know God and to believe in Him; do you desire to know what faith in Him really means? "O vain man" is literally, "O empty man," _i.e._ empty-headed, empty-handed, and empty-hearted. Empty-headed, in being so deluded as to suppose that a dead faith can save; empty-handed, in being devoid of true spiritual riches; empty-hearted, in having no real love either for God or man. The epithet seems to be the equivalent of _Raca_, the term of contempt quoted by our Lord as the expression of that angry spirit which is akin to murder (Matt. v. 22). The use of it by St. James may be taken as an indication that the primitive Church saw that the commands in the Sermon on the Mount are not rules to be obeyed literally, but illustrations of principles. The sin lies not so much in the precise term of reproach which is employed as in the spirit and temper which are felt and displayed in the employment of it. The change from "dead" (A.V.) to "barren" (R.V.) is not a change of translation, but of reading (νεκρά to ἀργή), the latter term meaning "_workless_, idle, unproductive" (Matt. xx. 3, 6; 1 Tim. v. 13; Titus i. 12; 2 Peter i. 8). Aristotle (_Nic. Eth._, I. vii. 11) asks whether it is likely that every member of a man's body should have a function or work (ἔργον) to perform, and that man as a whole should be functionless (ἀργός). Would nature have produced such a vain contradiction? We should reproduce the spirit of St. James's pointed interrogation if we rendered "that faith without fruits is fruitless."