Romans 14:4

Verse 4. Who art thou, etc. That is, who gave you this right to sit in judgment on others? Comp. Lu 12:14. There is reference here particularly to the Jew, who on account of his ancient privileges, and because he had the law of God, would assume the prerogative of judging in the case, and insist on conformity to his own views. See Ac 15. The doctrine of this epistle is, uniformly, that the Jew had no such privilege, but that in regard to Salvation he was on the same level with the Gentile. That judgest, etc. Comp. Jas 4:12. This is a principle of common sense and common propriety. It is not ours to sit in judgment on the servant of another man.