“Brethren, if any of you do err from the truth, and one convert him;”
King James Version (KJV)
5:19 As if he had said, I have now warned you of those sins to which you are most liable; and, in all these respects, watch not only over yourselves, but every one over his brother also. Labour, in particular, to recover those that are fallen. If any one err from the truth - Practically, by sin.
Jas 5:19 If any one of you do err from the truth. If a brother is led away from the gospel. One might be led into false doctrine, or into false practice. And one convert him. Bring him back from his errors and restore him.