Tertullian

“ Therefore if those whom God has conjoined man shall not separate by divorce, it is equally congruous that those whom God has separated by death man is not to conjoin by marriage; the joining of the separation will be just as contrary to God’s will as would have been the separation of the conjunction. ”

“ Accordingly, it will be without cause that you will say that God wills not a divorced woman to be joined to another man “while her husband liveth,” as if He do will it “when he is dead;” [5] whereas if she is not bound to him when dead, no more is she when living. “Alike when divorce dissevers marriage as when death does, she will not be bound to him by whom the binding medium has been broken off.” To whom, then, will she be bound? In the eye of God, it matters nought whether she marry during her life or after his death. For it is not against him that she sins, but against herself. ”

“ But another reason, too, conspires; nay, not another, but (one) which imposed the law of “the beginning,” and moved the will of God to prohibit divorce: the fact that (he) who shall have dismissed his wife, except on the ground of adultery, makes her commit adultery; and (he) who shall have married a (woman) dismissed by her husband, of course commits adultery. [3] A divorced woman cannot even marry legitimately; and if she commit any such act without the name of marriage, does it not fall under the category of adultery, in that adultery is crime in the way of marriage? ”