Whether a believer can, after his conversion, put away his unbelieving wife if she be willing to cohabit with him without insult to the Creator?

❌ Objection 1 : It would seem that a believer, after his conversion, cannot put away his unbelieving wife if she be willing to cohabit with him without insult to the Creator. For the husband is more bound to his wife than a slave to his master. But a converted slave is not freed from the bond of slavery, as appears from 1 Cor. 7:21; 1 Tim. 6:1. Therefore neither can a believing husband put away his unbelieving wife.

❌ Objection 2 : Further, no one may act to another's prejudice without the latter's consent. Now the unbelieving wife had a right in the body of her unbelieving husband. If, then, her husband's conversion to the faith could be prejudicial to the wife, so that he would be free to put her away, the husband could not be converted to the faith without his wife's consent, even as he cannot receive orders or vow continence without her consent.

❌ Objection 3 : Further, if a man, whether slave or free, knowingly marry a bondwoman, he cannot put her away on account of her different condition. Since, then, the husband, when he married an unbeliever, knew that she was an unbeliever, it would seem that in like manner he cannot put her away on account of her unbelief.

❌ Objection 4 : Further, a father is in duty bound to work for the salvation of his children. But if he were to leave his unbelieving wife, the children of their union would remain with the mother, because "the offspring follows the womb," and thus their salvation would be imperiled. Therefore he cannot lawfully put away his unbelieving wife.

❌ Objection 5 : Further, an adulterous husband cannot put away an adulterous wife, even after he has done penance for his adultery. Therefore if an adulterous and an unbelieving husband are to be judged alike, neither can the believer put aside the unbeliever, even after his conversion to the faith.