Apostolic Constitutions, Book VI 28

1But we do not say so of that mixture that is contrary to nature, or of any unlawful practice; for such are enmity to God. For the sin of Sodom is contrary to nature, as is also that with brute beasts. But adultery and fornication are against the law; the one whereof is impiety, the other injustice, and, in a word, no other than a great sin. But neither sort of them is without its punishment in its own proper nature. For the practisers of one sort attempt the dissolution of the world, and endeavour to make the natural course of things to change for one that is unnatural; but those of the second sort — the adulterers — are unjust by corrupting others' marriages, and dividing into two what God has made one, rendering the children suspected, and exposing the true husband to the snares of others. And fornication is the destruction of one's own flesh, not being made use of for the procreation of children, but entirely for the sake of pleasure, which is a mark of incontinency, and not a sign of virtue. All these things are forbidden by the laws; for thus say the oracles: You shall not lie with mankind as with womankind. For such a one is accursed, and you shall stone them with stones: they have wrought abomination. Every one that lies with a beast, slay him: he has wrought wickedness in his people. And if any one defile a married woman, slay them both: they have wrought wickedness; they are guilty; let them die. And afterwards: There shall not be a fornicator among the children of Israel, and there shall not be an whore among the daughters of Israel. You shall not offer the hire of an harlot to the Lord your God upon the altar, nor the price of a dog. For the vows arising from the hire of an harlot are not clean. These things the laws have forbidden, but they have honoured marriage, and have called it blessed, since God has blessed it who joined male and female together. And wise Solomon somewhere says: A wife is suited to her husband by the Lord. And David says: Your wife is like a flourishing vine in the sides of your house; your children like olive-branches round about your table. Behold, thus shall the man be blessed that fears the Lord. Wherefore marriage is honourable and comely, and the begetting of children pure, for there is no evil in that which is good. Therefore neither is the natural purgation abominable before God, who has ordered it to happen to women within the space of thirty days for their advantage and healthful state, who do less move about, and keep usually at home in the house. Nay, moreover, even in the Gospel, when the woman with the perpetual purgation of blood touched the saving border of the Lord's garment in hope of being healed, He was not angry at her, nor did complain of her at all; but, on the contrary, He healed her, saying, Your faith has saved you. When the natural purgations do appear in the wives, let not their husbands approach them, out of regard to the children to be begotten; for the law has forbidden it, for it says: You shall not come near your wife when she is in her separation. Nor, indeed, let them frequent their wives' company when they are with child. For they do this not for the begetting of children, but for the sake of pleasure. Now a lover of God ought not to be a lover of pleasure.