Leviticus 20:17DynamicTAB

Leviticus 20 : 17 Incest | Disgrace | Accountability
17. Dynamic Translation
If a man marries his sister, whether she is his father’s daughter or his mother’s daughter, and they expose each other’s nakedness, it is a shameful act. The people must publicly exclude them; for he exposed his sister’s nakedness, he must bear responsibility.

More on this verse