25 If you do any of these things, the land is defiled and will vomit you out.
30 So keep my laws and don't commit any of these abominations, I am the Lord your God.
A few more words about this episode
Don't have sex with your father or mother. (18:7)
The King James Version puts it this way: "The nakedness of thy father, or the nakedness of thy mother, shalt thou not uncover."
Although I don't know for sure what God means by "uncovering the nakedness" of someone, I'm guessing he means "have sexual relations" with that person. So I'm going with that assumption in this chapter, since "uncovering the nakedness of" gets a bit cumbersome after it's repeated a dozen or so times.