“Do not defile yourselves in any of these ways, because this is how the nations that I am going to drive out before you became defiled. Even the land was defiled; so I punished it for its sin, and the land vomited out its inhabitants.” God commands them not to be sexually immoral, because this is how the land became defiled or unclean. Then he says something really interesting. As the people are immoral, “the land” will vomit them out. To reiterate his point to the Israelites that their sexuality