1 Corinthians 7:14

For the unbelieving husband is sanctified by the wife. Such union by marriage is holy. The believer, therefore, is not, as you so scrupulously fear, defiled by contact with an unbeliever, but rather the unbeliever, as Anselm says, is sanctified by a kind of moral naming and sprinkling of holiness, both because he is the husband of a holy, that is a believing, wife, and also because by not hindering his wife in her faith, and by living happily with her, he as it were paves the way for himself to be converted by the prayers, merits, words, and example of his believing wife, and so to become holy. So did S. Cecilia convert her husband Valerian; Theodora, Sisinnius; Clotilda, Clodævus. So say Anselm, Theophylact, Chrysostom.

S. Natalia, the wife of S. Adrian, is illustrious for having not only incited her husband to adopt the faith, but also most gloriously to undergo martyrdom for it. For when she had heard that women were forbidden to serve the martyrs, and that the prison-doors would not be opened to them, she shaved off her hair, and having donned man's dress, she entered the prison and strengthened the hearts of the martyrs by her good offices. Other matrons followed her example. At length the tyrant Maximianus discovered the fraud, and ordered an anvil to be brought into the prison, and the arms and legs of the martyrs to be placed on it and smashed with a crow-bar. The lictors did as they had been ordered; and when the Blessed Natalia saw it, she went to meet them and asked them to begin with Adrian. The executioners did so, and when the leg of Adrian was placed on the anvil, Natalia caught hold of his foot and held it in position. Then the executioners aimed a blow with all their might, and cut off his feet and smashed his legs. Forthwith Natalia said to Adrian, "I pray thee, my lord, servant of Christ, while your spirit remains in you, stretch forth your hand that they may also cut that off, and that you may be made like the martyrs in all things: for greater sufferings have they endured than these." Then Adrian stretched out his hand, and gave it to Natalia, who placed it on the anvil, and then the executioners cut it off. Then they took the anvil away, and soon after his spirit fled. Cf. his life, September 8th.

It is worth our notice what Gennadius, Patriarch of Constantinople, writes, in his exposition of the Council of Florence (Sess. v.) of Theophilus, a heretic and not a heathen emperor, son of Michael the Stammerer, who was saved by the prayers of his wife Augusta. He had made an onslaught on images, and his mouth was in consequence so violently pulled open that men might see down his throat. This brought him to his senses, and he kissed the holy image. Shortly afterwards he was taken away to appear before the tribunal of God, and through the prayers offered for him by his wife and by holy men he received the pardon; for the queen in her sleep saw a vision of Theophilus bound and being dragged by a vast multitude, going before and following. Before him were borne different instruments of torture, and she saw those following who were being led to punishment until they came into the presence of the terrible Judge, and before Him Theophilus was placed. Then Augusta threw herself at the feet of the Dread Judge, and with many tears besought Him earnestly for her husband. The terrible Judge said to her: "O woman, great is thy faith; for thy sake, and because of the prayers of thy priests, I pardon thy husband." Then He said to His servants: "Loose him, and deliver him to his wife." It is also said that the Patriarch Methodius, having collected and written down the names of all kinds of heretics, including Theophilus, placed the roll under the holy table. Then in the same night on which the queen saw the vision, he too saw a holy angel entering the great temple, and saying, "O Bishop, thy prayers are heard, and Theophilus has found pardon." On awaking from sleep he went to the holy table, and lo! the unsearchable judgment of god, he found the name of Theophilus blotted out. Cf. also Baronuis (Annal. vol. ix., A.D. 842).

Else were your children unclean. If you were to put away a wife that believed not, your children would be looked upon as having been born in unlawful wedlock, and as therefore illegitimate. But, as it is, they are holy, i.e., clean conceived and born in honourable and lawful wedlock. So Ambrose, Anselm, Augustine (de Peccat. Meritis. lib.ii. c. 26). In the second place they would be strictly unclean, because they would be enticed into infidelity, and educated in it by the unbelieving parent, who had sought for the divorce through hatred of his partner; and especially if it is the father that is the unbeliever, for in such cases the children for the most part follow the father. But if the believer remain in wedlock with the unbeliever, the children are holy, because, with the tacit permission of the unbeliever, they can easily be sanctified, baptized, and Christianly educated through the faith, the diligence, and care of the believer. So S. Augustine (de Peccat. Meritis. lib. iii. c. 12), and after Tertullian, S. Jerome (ad Paulin. Ep. 153). It is from this passage that Calvin and Beza have gathered their doctrine f imputed righteousness, teaching that the children of believers are strictly holy, and can be saved without baptism. They say that by the very fact that they are children of believers they are regarded as being born in the Church, according to the Divine covenant in Gen. xvii. "I will be a God unto thee and to thy seed after thee." Similarly, in the Civil Law, when one parent is free the children are born free.

But these teachers err, For (1.) the Apostle says equally that the unbelieving husband is sanctified by the believing wife. But it is not precisely correct to say that such a man is sanctified through his wife; neither, therefore, is it strictly true of the child. (2.) The Church is not a civil but a supernatural republic, and in it no one is born a Christian; but by baptism, which has taken the place of circumcision, every one is spiritually born again and is made holy, not civilly but really, by faith, hope, and charity infused into his soul. This is the mind of the Fathers and the whole Church. (3.) It is said absolutely in S. John 3:5, that "except a man be born again of water and of the Spirit, he cannot enter into the kingdom of God." It is therefore untrue that any one not born of water, but merely of believing parents, can enter into the kingdom of God.