Matthew Henry's Concise Commentary

4:19-20 The Galatians were ready to account the apostle their enemy, but he assures them he was their friend; he had the feelings of a parent toward them. He was in doubt as to their state, and was anxious to know the result of their present delusions. Nothing is so sure a proof that a sinner has passed into a state of justification, as Christ being formed in him by the renewal of the Holy Spirit; but this cannot be hoped for, while men depend on the law for acceptance with God.