Leviticus 18:28-30

²⁸If you pollute the land, it will vomit you out just like it did the nations before you.

²⁹Consequently anyone who does any of these disgusting things must be expelled from their people.

³⁰You must accept my demand that you don't follow any of these disgusting practices done before you arrived. Don't pollute yourselves and make yourselves unclean. I am the Lord your God.”