Quote
"The nakedness of thy sister, the daughter of thy father, or daughter of thy mother, whether she be born at home, or born abroad, even their nakedness thou shalt not uncover."
"Cursed be he that lieth with his sister, the daughter of his father, or the daughter of his mother."

Incest is sex between close relatives, such as a brother, sister, or parent. This typically includes any kind of sexual activity between people in consanguinity, and sometimes those related by lineage. It is condemned and considered immoral in many societies. It can lead to an increased risk of genetic disorders in children in case of pregnancy from incestuous sex.
"The nakedness of thy sister, the daughter of thy father, or daughter of thy mother, whether she be born at home, or born abroad, even their nakedness thou shalt not uncover."
"And if a man shall take his sister, his fathers daughter, or his mothers daughter, and see her nakedness, and she see his nakedness; it is a wicked thing; and they shall be cut off in the sight of their people: he hath uncovered his sisters nakedness; he shall bear his iniquity."
"Suppose atomic bombs had reduced the population of the world to one brother and one sister, should they let the human race die out?"
"And thou shalt not uncover the nakedness of thy mothers sister, nor of thy fathers sister: for he uncovereth his near kin: they shall bear their iniquity."
"Property like incest holds the family together."
"Incest, rape and abuse is rampant everywhere, even in our churches, but society is silent. It is a silent epidemic. One in three women will experience a sexual assault in her lifetime and one in six males, yet we dont speak of it, even in our churches"