Is dead, being alone. He says that faith is dead, being by itself, that is, when destitute of good works. We hence conclude that it is indeed no faith, for when dead, it does not properly retain the name. The Sophists plead this expression and say, that some sort of faith is found by itself; but this frivolous caviling is easily refuted; for it is sufficiently evident that the Apostle reasons from what is impossible, as Paul calls an angel anathema, if he attempted to subvert the gospel. (Galatians 1:8.)

If it hath not works, is dead - The faith that does not produce works of charity and mercy is without the living principle which animates all true faith, that is, love to God and love to man. They had faith, such as a man has who credits a well-circumstanced relation because it has all the appearance of truth; but they had nothing of that faith that a sinner, convinced of his sinfulness, God's purity, and the strictness of the Divine laws, is obliged to exert in the Lord Jesus, in order to be saved from his sins.

Even so faith, if it hath not works, is dead, being alone. It is like a lifeless carcass, a body without a soul, James 2:26 for as works, without faith, are dead works, so faith, without works, is a dead faith, and not like the lively hope and faith of regenerated persons: and indeed, such who have no other faith than this are dead in trespasses and sins; not that works are the life of faith, or that the life of faith lies in, and flows from works; but, as Dr. Ames observes (b), good works are second acts, necessarily flowing from the life of faith; to which may be added, and by these faith appears to be living, lively and active, or such who perform them appear to be true and living believers.
(b) Medulla Theolog. l. 2. c. 7. sect. 35.

faith . . . being alone--ALFORD joins "is dead in itself." So BENGEL, "If the works which living faith produces have no existence, it is a proof that faith itself (literally, 'in respect to itself') has no existence; that is, that what one boasts of as faith, is dead." "Faith" is said to be "dead in itself," because when it has works it is alive, and it is discerned to be so, not in respect to its works, but in respect to itself. English Version, if retained, must not be understood to mean that faith can exist "alone" (that is, severed from works), but thus: Even so presumed faith, if it have not works, is dead, being by itself "alone," that is, severed from works of charity; just as the body would be "dead" if alone, that is, severed from the spirit (James 2:26). So ESTIUS.

So likewise that faith which hath not works is a mere dead, empty notion; of no more profit to him that hath it, than the bidding the naked be clothed is to him.