Parallel
Leviticus 20:17
Brenton's English Septuagint · Berean Standard Bible
Whosoever shall take his sister by his father or by his mother, and shall see her nakedness, and she see his nakedness, it is a reproach: they shall be destroyed before the children of their family; he has uncovered his sister's nakedness, they shall bear their sin.
If a man marries his sister, whether the daughter of his father or of his mother, and they have sexual relations, it is a disgrace. They must be cut off in the sight of their people. He has uncovered the nakedness of his sister; he shall bear his iniquity.