1. Leviticus 20:12 (ESV)
  2. Exposition

What is the punishment for a man who has a sexual relationship with his daughter-in-law?

Leviticus 20:12 (ESV)

12 If a man lies with his daughter-in-law, both of them shall surely be put to death; they have committed perversion; their blood is upon them.

The punishment for both individuals is death.