James, after establishing the sinfulness of showing partiality, points out a sin in this area is sufficient to condemn a man. This is a truth with which Jews were especially familiar. He who willfully breaks one command is a law breaker and is guilty before the law. You can’t treat God’s law as a buffet, taking what you want and ignoring the rest.
So, in this regard we are to love all men and treat them well. As James wrote, “So speak and so do as those who will be judged by the law of liberty” (12). To dishonor the poor man is to act in a way that is inconsistent with the law of Christ. He taught clearly the responsibility to love all men.
God will not forgive our sins, if we don’t forgive the sins of others. (cf. Matthew 6:12). He will not treat us with mercy if we are not willing to treat others mercifully. (Matthew 18:21-35). This mercy and compassion for one another is what sets apart the disciples of Christ from the world.
