Characteristics that make the letter distinctive are: (1) its unmistakably Jewish nature; (2) its emphasis on vital Christianity, characterised by good deeds and a faith that works (genuine faith must and will be accompanied by a consistent lifestyle); (3) its simple organization; (4) and its familiarity with Jesus’ teachings preserved in the Sermon on the Mount.
This epistle of James is one of the most instructive writings in the New Testament. Being chiefly directed against particular errors at that time brought in among the Jewish Christians, it does not contain the same full doctrinal statements as the other epistles, but it presents an admirable summary of the practical duties of all believers. The leading truths of Christianity are set forth throughout; and on attentive consideration, it will be found entirely to agree with St. Paul’s statements concerning grace and justification, while it abounds with earnest exhortations to the patience of hope and obedience of faith and love, interspersed with warnings, reproofs, and encouragements, according to the characters addressed. The truths laid down are very serious, and necessary to be maintained; and the rules for practice ought to be observed in all times. In Christ there are no dead and sapless branches, faith is not an idle grace; wherever it is, it brings forth fruit in works.Matthew Henry