Thomas Aquinas

“ It would seem that it was lawful for a divorced wife to have another husband. For in divorce the husband did a greater wrong by divorcing his wife than the wife by being divorced. But the husband could, without sin, marry another wife. Therefore the wife could without sin, marry another husband. ”

“ For some say that under the Law those who put away their wives, after giving them a bill of divorce, were not excused from sin, although they were excused from the punishment which they should have suffered according to the Law: and that for this reason Moses is stated to have permitted the bill of divorce. Accordingly they reckon four kinds of permission: one by absence of precept, so that when a greater good is not prescribed, a lesser good is said to be permitted: thus the Apostle by not prescribing virginity, permitted marriage (1 Cor. 7) . ”

“ Further, a concubine differs from a wife especially in the fact that she is not inseparably united. But by no dispensation could a man have a concubine. Therefore by no dispensation could he put his wife away.
Objection 3: Further, men are as fit to receive a dispensation now as of old. But now a man cannot receive a dispensation to divorce his wife. ”

“ There is however a gloss on Dt. 24:1, "If . . . she find not favor in his eyes," which would seem to restrict them yet more, namely to sin, by saying that there "uncleanness" denotes sin: but "sin" in the gloss refers not only to the morality of the soul but also to the condition of the body. Accordingly we grant the first two objections.
Reply to Objection 3: Barrenness and other like things are causes of hatred, and so they are remote causes of divorce. ”

“ Secondly, by a cause altogether supernatural, as in the case of miracles: and in this way there can be a variation in the course of nature, not only in the course which is appointed for the majority of cases, but also in the course which is appointed for all cases, as instanced by the sun standing still at the time of Josue, and by its turning back at the time of Ezechias, and by the miraculous eclipse at the time of Christ's Passion [*Jos. 10:14; 4 Kings 20:10; Is. 38:8; Mat. 27:15] . ”