Whether the believer who leaves his unbelieving wife can take another wife?
Objections
❌ Objection 1 : It would seem that the believer who leaves his unbelieving wife cannot take another wife. For indissolubility is of the nature of marriage, since it is contrary to the natural law to divorce one's wife. Now there was true marriage between them as unbelievers. Therefore their marriage can nowise be dissolved. But as long as a man is bound by marriage to one woman he cannot marry another. Therefore a believer who leaves his unbelieving wife cannot take another wife.
❌ Objection 2 : Further, a crime subsequent to marriage does not dissolve the marriage. Now, if the wife be willing to cohabit without insult to the Creator, the marriage tie is not dissolved, since the husband cannot marry another. Therefore the sin of the wife who refuses to cohabit without insult to the Creator does not dissolve the marriage so that her husband be free to take another wife.
❌ Objection 3 : Further, husband and wife are equal in the marriage tie. Since, then, it is unlawful for the unbelieving wife to marry again while her husband lives, it would seem that neither can the believing husband do so.
❌ Objection 4 : Further, the vow of continence is more favorable than the marriage contract. Now seemingly it is not lawful for the believing husband to take a vow of continence without the consent of his unbelieving wife, since then the latter would be deprived of marriage if she were afterwards converted. Much less therefore is it lawful for him to take another wife.
❌ Objection 5 : Further, the son who persists in unbelief after his father's conversion loses the right to inherit from his father: and yet if he be afterwards converted, the inheritance is restored to him even though another should have entered into possession thereof. Therefore it would seem that in like manner, if the unbelieving wife be converted, her husband ought to be restored to her even though he should have married another wife: yet this would be impossible if the second marriage were valid. Therefore he cannot take another wife.