Leviticus 18:5

18:5 Ye shall therefore keep my statutes, and my judgments: which if a man do, he shall live in them: I [am] the LORD.

Leviticus 18:30

18:30 Therefore shall ye keep mine ordinance, that [ye] commit not [any one] of these abominable customs, which were committed before you, and that ye defile not yourselves therein: I [am] the LORD your God.