'Defilement' in the Bible

If a man lies [intimately] with his daughter-in-law, both of them shall most certainly be put to death; they have committed incest; their blood is on them.

My mind reels, horror overwhelms me;The twilight I longed for has been turned into fear and trembling for me.

After he is cleansed [from the defilement of a corpse], seven days more shall elapse for him [before returning to the temple].