Incest with a Daughter

It is forbidden to have incestuous relations with one's daughter.

The Torah doesn't explicitly mention this prohibition—for if incest with a granddaughter is forbidden, how much more so incest with a daughter. And the Sages deduced from the wording of the verses that incest with a daughter is biblically prohibited.

Incest with a Daughter's Daughter

"The nakedness of . . . [or] your daughter's daughter you shall not uncover their nakedness, for they are your own nakedness"—Leviticus 18:10.

It is forbidden to have incestuous relations with one's daughter's daughter.

Incest with a Mother-in-Law or Wife's Daughter

"You shall not uncover the nakedness of a woman and her daughter"Leviticus 18:17.

It is forbidden to have incestuous relations with one's wife's mother or daughter.

Incest with a Wife's Paternal Grandmother or a Wife's Son's Daughter

"...her son's daughter..."Leviticus 18:17.

It is forbidden to have incestuous relations with one's wife's paternal grandmother or one's wife's son's daughter

Incest with a Wife's Maternal Grandmother or a Wife's Daughter's Daughter

"...and her daughter's daughter you shall not marry"Leviticus 18:17.

It is forbidden to have incestuous relations with one's wife's maternal grandmother or one's wife's daughter's daughter