James 2:24
You see that a person is justified by works and not by faith alone.

With this verse the illustration concerning Abraham is concluded and James universalises and applies his argument. “You see” (horate) is second-person plural and marks a transition from James’s argument with his imaginary interlocutor, to him addressing his listeners as a whole. His conclusion makes two assertions, the one positive and the other negative (McKnight, 255). The positive conclusion is: “you see that a person is justified by works.” James emphasises the works by placing them before the verb: hoti ex ergōn dikaioutai anthrōpοs (literally, “that out of works, a person is justified”). This picks up the language of verse 21 where James has previously argued that Abraham was “justified by works.” The negative conclusion follows: “and not by faith alone” (kai ouk ek pisteōs monon).

The supposed contradiction between James and Paul is sharpest with this verse, where James appears to directly contradict what Paul asserts in Romans 3:20, 28:

For by works of the law no one will be justified in his sight … For we hold that one is justified by faith apart from works of the law.

Moo argues correctly that Paul would wholeheartedly agree with James concerning his argument “not by faith alone,” but that “it is impossible to imagine Paul saying, ‘a man is justified by works’” (Moo, 115). Once more, however, we must insist that Paul and James are engaged in different arguments due to the different circumstances each is facing. Paul speaks of the beginning of the Christian life, of the initial justification of sinners by grace through faith—without works “of the law.” One’s obedience to the law’s dictates, especially the so-called “boundary markers” of Judaism by which one might be considered “in,” provide no basis for justification. Further, the faith spoken of by Paul is steadfast faith in God through Christ. This faith is not antithetical to works, and will indeed issue in all kinds of works, though these works are the expression of the faith by which the person has been saved.

James, in contrast, is arguing against what may be considered a distortion of Paul’s teaching, whereby one considers that an intellectual commitment to monotheism is sufficient to please God. Further, he is speaking not of initial justification but of final judgement, in which one’s works demonstrate the reality of one’s faith. Nor is James saying that one is saved by the works “of the law,” although his overarching use of works may include obedience to the Torah as it was mediated to the messianic community through Jesus. His emphasis in the chapter as a whole is on works of mercy toward the poor, and obedience toward God.

The key to the verse is the little word “alone” (monon). Justifying faith is never “alone,” but comes to expression in action. The problem with the position set forth by the interlocutor is that faith is separated from works and considered sufficient and complete without works. Faith, however, is a whole-of-life reality, engaging the whole person in response to God, and so cannot be limited to a cognitive or confessional commitment that does not issue in a whole-of-life response to the will and ways of God. Such “faith” is not faith at all, does not justify, cannot save, and is dead.

We must also be clear that works are not “added” to faith, as though the two ideas were separable. Rather, works of obedience and mercy are the way in which faith becomes visible in one’s life and in the world, and so is shown to be faith. Scot McKnight provides excellent insight into the relation of faith and works, while arguing that we allow the biblical text itself to lead the way we think of this relation, rather than forcing it to conform to a predetermined theological conviction:

I see a tendency, which seems to me to be a subtle attempt to let the Reformation have too much influence on exegesis, to prefer this formula: faith is demonstrated by works. What this does is salvage faith as the sine qua non of salvation. which may well be sound theology, but it lacks the nuance of James. (Some have argued that it is James who lacks the nuance and is in need of help.) Instead of locking into the term “demonstration,” I suggest we use each of the four terms James himself uses, and I suggest we use these terms liberally:

Works show faith (2:18).          
Faith works with works (2.22a).
Faith is perfected by works (2.22b).      
Works fulfill faith (2.23).          

While we may be most comfortable with the first and least comfortable with the second, both the third and fourth are instances as much, if not more, of the second as of the first. Yes, works demonstrate faith, but they also perfect and fulfill faith and, as James goes to great pains to emphasize, the two work together to produce a working faith that saves. His emphasis is on their inseparability, not on distinguishing them or on their sequential relationship (McKnight, 244, original emphasis).