"Be ye doers of the Word." Both verb and tense are remarkable (γίνεσθε): "_Become_ doers of the Word." True Christian practice is a thing of growth; it is a process, and a process which has already begun, and is continually going on. We may compare, "_Become_ ye therefore wise as serpents, and harmless as doves" (Matt. x. 16); "Therefore _become_ ye also ready" (xxiv. 44); and "_Become_ not faithless, but believing" (John xx. 27; where see Westcott's note). "Become doers of the Word" is more expressive than "Be doers of the Word," and a good deal more expressive than "Do the Word." A "doer of the Word" (ποιητὴς λόγου) is such by profession and practice; the phrase expresses a habit. But one who merely incidentally performs what is prescribed may be said to "do the Word." By the "Word" is meant what just before has been called the "implanted Word" and the "Word of truth" (w. 21, 18), and what in this passage is also called "the perfect law, the law of liberty" (ver. 25), _i.e._ the Gospel. The parable of the Sower illustrates in detail the meaning of becoming an habitual doer of the implanted Word.
"And not hearers only." The order of the words in the Greek is a little doubtful, the authorities being very much divided; but the balance is in favour of taking "only" closely with "hearers" (μὴ ἀκροαταὶ μόνον rather than μὴ μόνον ἀκροαταί); "Be not such as are mere hearers and nothing more." The word for "hearer" occurs nowhere else in the New Testament, excepting in the singularly similar passage in the Epistle to the Romans, which is one of the passages that give support to the theory that either St. Paul had seen this Epistle, or St. James had seen St. Paul's: "Not the hearers (ἀκροαταί) of a law are just before God, but the doers of a law shall be justified," (Rom. ii. 13; see above, p. 57). The verb (ἀκροάομαι) does not occur in the New Testament; but another cognate substantive (ἀκροατήριον), meaning "a place of hearing," is found in the Acts (xxv. 23). In classical Greek this group of words indicates _attentive_ listening, especially in the case of those who attend the lectures of philosophers and the addresses of public speakers. It is thus used frequently in Plato, Aristotle, Thucydides, and Plutarch. It is somewhat too hastily concluded that there is nothing of this kind included either in this passage or in Rom. ii. 13. Possibly that is the very thing to which both St. James and St. Paul allude. St. James, in the address which he made to the so-called Council of Jerusalem, says, "Moses from generations of old hath in every city them that preach him, being read in the synagogues every Sabbath" (Acts xv. 21). The Jews came with great punctiliousness to these weekly gatherings, and listened with much attention to the public reading and exposition of the Law; and too many of them thought that with that the chief part of their duty was performed. This habitual public testimony of respect for the Mosaic Law and the traditional interpretations of it, and this zeal to acquire a knowledge of its contents and an insight into its meaning, was the main portion of what was required of them. This, St. James tells them, is miserably insufficient, whether what they hear be the Law or the Gospel, the Law with or without the illumination of the life of Christ. "Being swift to hear" (ver. 19) and to understand is well, but "apart from works it is barren." It is the habitual practice in striving to _do_ what is heard and understood that is of value. "Not a hearer that forgetteth, but a doer that worketh" is blessed, and "blessed in his doing." To suppose that mere hearing brings a blessing is "deluding your own selves." Bede rightly quotes Rev. i. 3 in illustration: "Blessed are they that hear the words of the prophecy, and _keep_ the things which are written therein."