“Do not make yourselves unclean by any of these things, for by all these the nations I am driving out before you have become unclean.” That’s the message the Lord spoke to Moses at the conclusion of Leviticus 18, as Israel was being ushered into the promised land—a land they are still trying desperately to hold and defend. “But you shall keep my statutes and my rules and do none of these abominations, either the native or the stranger who sojourns among you, lest the land vomit you out when you make it unclean, as it vomited out the nation that was before you.”