1 Corinthians 9:5 - Coke's Commentary on the Holy Bible

To lead about a sister, a wife— It is very improbable that the Apostle would have carried about with him, in these sacred peregrinations, a woman to whom he was not married; so that the answer which the Papists generally make to the argument often brought from these words in favour of a married clergy, is absolutely inconclusive. The disjuncture between the Apostles and the brethren of the Lord, is a proof that James bishop of Jerusalem, and Jude, our Lord's brethren, were not of the number of the Apostles. The last clause of this verse, And Cephas, is important; both as it declares in effect that St. Peter continued to live with his wife after he became an Apostle, and also that St. Peter had no rights as an Apostle, which were not common to St. Paul.—A remark utterly subversive of popery, if traced to its obvious consequences. See Locke, Doddridge, and Wall.