If A Man Say, I Have Faith

James 2:14 - What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him?

"For a man to have faith, and to say he has faith, are two different things; the apostle does not say, If a man have faith without works, for that is not a supposable case; the drift of this place of scripture is plainly to show that an opinion, or speculation, or assent, without works, is not faith; but the case is put thus, If a man say he hath faith, etc. Men may boast of that to others, and be conceited of that in themselves, of which they are really destitute." - Matthew Henry's Commentary