Leviticus 18:28-30

28If you defile it, the land will vomit you out as it vomited out the nation that was before you.

29For whoever does any of these detestable things, the souls that do them are to be cut off from the midst of their people.

30Therefore you are to keep My charge, so that you do not practice any of these detestable customs that were practiced before you, so that you do not defile yourselves by them. I am Adonai your God.”