Adam Clarke's Commentary.
"From James 1:22 the apostle has been enforcing Christian practice. He now applies to those who neglect this under the pretense of faith. St. Paul had taught that a man is justified by faith without the works of the law. This some already began to wrest to their own destruction. Wherefore St. James, purposely repeating, James 1:21, 23, 25, the same phrases, testimonies, and examples which St. Paul had used, Romans 4:3; Hebrews 11:17, 31, refutes not the doctrine of St. Paul, but the error of those who abused it. There is therefore no contradiction between the apostles; they both delivered the truth of God, but in a different manner, as having to do with different kinds of men. This verse is a summary of what follows: What profiteth it, is enlarged on, James 2:15-17; though a man say, James 2:18, 19; can that faith save him? James 2:20. It is not though he have faith, but though he say, I have faith. Here therefore true living faith is meant. But in other parts of the argument the apostle speaks of a dead imaginary faith. He does not therefore teach that true faith can, but that it cannot, subsist without works. Nor does he oppose faith to works, but that empty name of faith to real faith working by love. Can that faith which is without works save him? No more than it can profit his neighbor.
"From James 1:22 the apostle has been enforcing Christian practice. He now applies to those who neglect this under the pretense of faith. St. Paul had taught that a man is justified by faith without the works of the law. This some already began to wrest to their own destruction. Wherefore St. James, purposely repeating, James 1:21, 23, 25, the same phrases, testimonies, and examples which St. Paul had used, Romans 4:3; Hebrews 11:17, 31, refutes not the doctrine of St. Paul, but the error of those who abused it. There is therefore no contradiction between the apostles; they both delivered the truth of God, but in a different manner, as having to do with different kinds of men. This verse is a summary of what follows: What profiteth it, is enlarged on, James 2:15-17; though a man say, James 2:18, 19; can that faith save him? James 2:20. It is not though he have faith, but though he say, I have faith. Here therefore true living faith is meant. But in other parts of the argument the apostle speaks of a dead imaginary faith. He does not therefore teach that true faith can, but that it cannot, subsist without works. Nor does he oppose faith to works, but that empty name of faith to real faith working by love. Can that faith which is without works save him? No more than it can profit his neighbor.
