James 1:22

But be ye doers of the word, and not hearers only, deluding your own selves.

This is exactly the teaching of Paul in Romans 2:13; and taken together with what James would write in the second chapter, it is clear enough that this epistle was written for the purpose of correcting the abuse of Paul's teaching regarding justification by faith. By this reference, James almost says, "My teaching is exactly what the apostle Paul really taught." "Not the hearers of the law, but the doers of the law shall be justified" (Romans 2:13). The passage in Romans has a primary application to doing the law of Moses, but by his declaration here, James showed that the same principle is applicable to Christians with respect to the law of Jesus Christ, a law which James would mention in the next line.