Likewise also was not Rahab. It seems strange that he connected together those who were so unlike. Why did he not rather choose some one from so large a number of illustrious fathers, and join him to Abraham? Why did he prefer a harlot to all others? he designedly put together two persons so different in their character, in order more clearly to shew, that no one, whatever may have been his or her condition, nation, or class in society, has ever been counted righteous without good works. He had named the patriarch, by far the most eminent of all; he now includes under the person of a harlot, all those who, being aliens, were joined to the Church. Whosoever, then, seeks to be counted righteous, though he may even be among the lowest, must yet shew that he is such by good works. James, according to his manner of speaking, declares that Rahab was justified by works; and the Sophists hence conclude that we obtain righteousness by the merits of works. But we deny that the dispute here is concerning the mode of obtaining righteousness. We, indeed, allow that good works are required for righteousness; we only take away from them the power of conferring righteousness, because they cannot stand before the tribunal of God. [1]

Footnotes

1 - The last verse is left unnoticed, -- James 2:26 "For as the body without the spirit is dead, so faith without works (or, having no works) is dead." The meaning is not, that works are to faith what the spirit is to the body, for that would make works to be the life of faith, the reverse of the fact; but the meaning is, that faith having no works is like a dead carcass without life.

Likewise also was not Rahab the harlot justified by works? - In the same sense in which Abraham was, as explained above - showing by her act that her faith was genuine, and that it was not a mere cold and speculative assent to the truths of religion. Her act showed that she truly believed God. If that act had not been performed, the fact would have shown that her faith was not genuine, and she could not have been justified. God saw her faith as it was; he saw that it would produce acts of obedience, and he accepted her as righteous. The act which she performed was the public manifestation of her faith, the evidence that she was justified. See the case of Rahab fully explained in the notes at Hebrews 11:31. It may be observed here, that we are not to suppose that everything in the life and character of this woman is commended. She is commended for her faith, and for the fair expression of it; a faith which, as it induced her to receive the messengers of the true God, and to send them forth in peace, and as it led her to identify herself with the people of God, was also influential, we have every reason to suppose, in inducing her to abandon her former course of life. When we commend the faith of a man who has been a profane swearer, or an adulterer, or a robber, or a drunkard, we do not commend his former life, or give a sanction to it. We commend that which has induced him to abandon his evil course, and to turn to the ways of righteousness. The more evil his former course has been, the more wonderful, and the more worthy of commendation, is that faith by which he is reformed and saved.

Rahab the harlot - See the notes on Joshua 2:1, etc., and Hebrews 11:31 (note), etc. Rahab had the approbation due to genuine faith, which she actually possessed, and gave the fullest proof that she did so by her conduct. As justification signifies, not only the pardon of sin, but receiving the Divine approbation, James seems to use the word in this latter sense. God approved of them, because of their obedience to his will; and he approves of no man who is not obedient.

(13) Likewise also was not Rahab the harlot justified by works, when she had received the messengers, and had sent [them] out another way?
(13) A forth reason taken from a similar example of Rahab the harlot, who was proved by her works that she was justified by a true faith.

Likewise also was not Rahab the harlot,.... See Gill on Hebrews 11:31 justified by works; this woman was an instance of the grace of God in calling the chief of sinners, and was a true believer; and what she did, she did in faith, Hebrews 11:31 and her faith was shown by her works to be true and genuine; and it was manifest that she was a justified person. This instance is produced with the other, to show, that wherever there is true faith, whether in Jew or Gentile, in man or woman, in greater or lesser believers, or in such who have been greater or lesser sinners, there will be good works; and therefore that person is a vain man that talks and boasts of his faith, and depends upon it, and slights and rejects good works as unnecessary to be done.
When she had received the messengers: the spies that Joshua sent, into her house, with peace and safety:
and had sent them out another way; than they came in, even through the window upon the town wall, Joshua 2:1.

It is clear from the nature of Rahab's act, that it is not quoted to prove justification by works as such. She believed assuredly what her other countrymen disbelieved, and this in the face of every improbability that an unwarlike few would conquer well-armed numbers. In this belief she hid the spies at the risk of her life. Hence Hebrews 11:31 names this as an example of faith, rather than of obedience. "By faith the harlot Rahab perished not with them that believed not." If an instance of obedience were wanting. Paul and James would hardly have quoted a woman of previously bad character, rather than the many moral and pious patriarchs. But as an example of free grace justifying men through an operative, as opposed to a mere verbal faith, none could be more suitable than a saved "harlot." As Abraham was an instance of an illustrious man and the father of the Jews, so Rahab is quoted as a woman, and one of abandoned character, and a Gentile, showing that justifying faith has been manifested in those of every class. The nature of the works alleged is such as to prove that James uses them only as evidences of faith, as contrasted with a mere verbal profession: not works of charity and piety, but works the value of which consisted solely in their being proofs of faith: they were faith expressed in act, synonymous with faith itself.
messengers--spies.
had received . . . had sent--rather, "received . . . thrust them forth" (in haste and fear) [ALFORD].
another way--from that whereby they entered her house, namely, through the window of her house on the wall, and thence to the mountain.

Rahab the harlot. See notes on Hebrews 11:31. This is one of the long roll of examples of faith shown by works given by Paul.
For as the body without the spirit. The body is a lifeless, dead thing, without the spirit. So lifeless is faith it shows an energy in works.

After Abraham, the father of the Jews, the apostle cites Rahab, a woman, and a sinner of the gentiles; to show, that in every nation and sex true faith produces works, and is perfected by them; that is, by the grace of God working in the believer, while he is showing his faith by his works.