Leviticus 18:24-28

²⁴Defile not ye yourselves in any of these things: for in all these the nations are defiled which I cast out from before you; ²⁵And the land is defiled: therefore I do visit the iniquity thereof upon it, and the land vomiteth out her inhabitants. ²⁶Ye therefore shall keep my statutes and mine ordinances, and shall not do any of these abominations; neither the home-born, nor the stranger that sojourneth among you; ²⁷(for all these abominations have the men of the land done, that were before you, and the land is defiled); ²⁸that the land vomit not you out also, when ye defile it, as it vomited out the nation that was before you.