Jamieson, Fausset & Brown

Who art thou that judges another man's--rather, "another's" servant?--that is, CHRIST'S, as the whole context shows, especially Rom 14:8-9. Yea, &c.--"But he shall be made to stand, for God is able to make him stand"; that is, to make good his standing, not at the day of judgment, of which the apostle treats in Rom 14:10, but in the true fellowship of the Church here, in spite of thy censures.