Leviticus 18:24-30

‘Do not defile yourselves by any of these things; for by all these the nations which I am casting out before you have become defiled. For the land has become defiled; therefore I have brought its punishment upon it, and the land vomits out its inhabitants. But as for you, you are to keep My statutes and My judgments (precepts) and shall not commit any of these repulsive acts, neither the native-born, nor the stranger who lives temporarily among you (for all these repulsive acts have been done by the men who lived in the land before you, and the land has become defiled); [do none of these things] so that the land will not vomit you out, should you defile it, as it has vomited out the nation which has been before you. For whoever commits any of these repulsive acts, those persons who do so shall be cut off from among their people [excluding them from the atonement made for them]. So keep My command: do not practice any of the repulsive customs which have been practiced before you, so as not to defile yourselves by them; I am the LORD your God.’ ”