18 The Lord spoke to Moses. He said, 2“Speak to the people of Israel. Tell them, ‘I am the Lord your God. 3You must not do what the people of Egypt do. You used to live there. And you must not do what the people of Canaan do. I am bringing you into their land. Do not follow their practices.
9“ ‘Do not have sex with your sister. It does not matter whether she is your father’s daughter or your mother’s daughter. It does not matter whether she was born in the same home as you were or somewhere else.
17“ ‘Do not have sex with both a woman and her daughter. Do not have sex with either her son’s daughter or her daughter’s daughter. They are close relatives on her side. Having sex with them is an evil thing.
24“ ‘Do not make yourselves “unclean” in any of those ways. That is how other nations became “unclean.” So I am going to drive those nations out of the land to make room for you. 25Even their land was not “clean.” So I punished it because of its sin. The land itself threw out the people who lived there.
27“ ‘All of those things were done by the people who lived in the land before you. That is how the land became “unclean.” 28If you make the land “unclean,” it will throw you out. It will get rid of you just as it got rid of the nations that were there before you.
30“ ‘Do exactly what I require. When you arrive in Canaan, do not follow any of the practices of its people. I hate the things they do. Do not make yourselves “unclean” by doing them. I am the Lord your God.’ ”