In the Bible
One of the most notable features of all the lists is that sexual activity between a man and his own daughter is not explicitly forbidden, although the first relation mentioned after the Levitical prohibition of sex with “near kin” is that of “thy father.” The Talmud argues that this absence is because the prohibition was obvious, especially given the proscription against a relationship with a granddaughter. As with the case of a man’s own daughter, the shortness of the list in Leviticus 20, and especially of that in Deuteronomy, are explained by classical Jewish scholarship as being due to the obviousness of the missing prohibitions.
Apart from the case of a man marrying his daughter, the list in Leviticus 18 roughly produces the same rules as were followed in early (pre-Islamic) Arabic culture. However, most tribal nations also disliked exogamous marriage – marriage to completely unrelated people.
Judaism’s view is that prior to the giving of the Torah at Mount Sinai, some of the prohibitions only applied voluntarily. Thus in several prominent cases in the Torah, the incest rules are ignored in favour of marriage to a close relative; Jacob is described as having married his first wife’s sister.
Some secular Biblical scholars have instead proposed that forbidding incest with a daughter was originally in the list, but was then accidentally left out from the copy on which modern versions of the text ultimately depend, due to a mistake by the scribe.
To Be Continue ……….