ושם איש ישראל המכה אשר הכה את המדינית זמרי בן סלוא נשיא בית אב לשמעוני
Rashi comments, “In a place where the Torah traces the ancestry of a tzaddik, righteous one, for praise, it gives the ancestry of the rasha, evil one, for disparagement”. In the previous parsha, when the Torah describes the immoral outrage committed by Zimri, the perpetrator is not identified by name. It is mentioned here only by way of contrasting with Pinchas’ ancestry. Pinchas’ ancestry is introduced to his credit, in order to underscore that he upheld the tradition of his grandfather, Aharon HaKohen. Zimri’s lineage is recorded to his disparagement, as if to imply that, although he was a leader…