John Calvin's Commentary on the Bible

2 (James 3:2)

Verse 2

2For in many things we offend all. This may be taken as having been said by way of concession, as though he had said, “Be it that thou findest what is blamable in thy brethren, for no one is free from sins; but dost thou think that thou art perfect who usest a slanderous and virulent tongue?” But James seems to me to exhort us by this argument to meekness, since we are ourselves also surrounded with many infirmities; for he acts unjustly who denies to others the pardon he needs himself. So also Paul says, when he bids the fallen to be reproved kindly, and in the spirit of meekness; for he immediately adds,

“considering thyself, lest thou also be tempted.”
(
Galatians 6:1.)

For there is nothing which serves more to moderate extreme rigor than the knowledge of our own infirmity.

If any man offend not in word. After having said that there is no one who does not sin in many things, he now shews that the disease of evil-speaking is more odious than other sins; for by saying that he who offends not with his tongue is perfect, he intimates that the restraining of the tongue is a great virtue, and one of the chief virtues. Hence they act most perversely who curiously examine every fault, even the least, and yet so grossly indulge themselves.

He then indirectly touches here on the hypocrisy of censors, because in examining themselves they omitted the chief thing, and that was of great moment even their evil-speaking; for they who reproved others pretended a zeal for perfect holiness, but they ought to have begun with the tongue, if they wished to be perfect. As they made no account of bridling the tongue, but, on the contrary, did bite and tear others, they exhibited only a fictitious sanctity. It is hence evident that they were the most reprehensible of all, because they neglected a primary virtue. This connection renders the meaning of the Apostle plain to us.

- John Calvin's Commentary on the Bible