Derasha 1 on Acharei Mos 18:08

Parashas Acharei Mos · Passuk 18:08

The Complete Passuk

עֶרְוַ֥ת אֵֽשֶׁת־אָבִ֖יךָ לֹ֣א תְגַלֵּ֑ה עֶרְוַ֥ת אָבִ֖יךָ הִֽוא׃

Torah Temima points to Sanhedrin 54a.

Core Text — Sanhedrin 54a

ערות אשת אביך — הרי זו אזהרה לאשת אביו.

English: “The nakedness of your father’s wife” — this is the prohibition of one’s father’s wife.

Father’s wife (stepmother)

Relations with a stepmother are independently forbidden.