4.  I, however, maintain that this point has not been left in silence, but that the lawgiver has made a distinct prohibition.  The words “None of you shall approach to any one that is near of kin to him, to uncover their nakedness,” Lev. xviii. 6. embraces also this form of kinsmanship, for what could be more akin to a man than his own wife, or rather than his own flesh?  “For they are no more twain but one flesh.” St. Matt. xix. 6.  So, through the wife, the sister is made akin to the husband.  For as he shall not take his wife’s mother, nor yet his wife’s daughter, because he may not take his own mother nor his own daughter, so he may not take his wife’s sister, because he may not take his own sister.  And, on the other hand, it will not be lawful for the wife to be joined with the husband’s kin, for the rights of relationship hold good on both sides.  But, for my part, to every one who is thinking about marriage I testify that, “the fashion of this world passeth away,” 1 Cor. vii. 31. and the time is short:  “it remaineth that both they that have wives be as though they had none.” 1 Cor. vii. 29.  If he improperly quotes the charge “Increase and multiply,” Gen. i. 28. I laugh at him, for not discerning the signs of the times.  Second marriage is a remedy against fornication, not a means of lasciviousness.  “If they cannot contain,” it is said “let them marry;” 1 Cor. vii. 9. but if they marry they must not break the law.