Sforno on Deuteronomy 33:12/ספורנו על דברים ל״ג:י״ב

1'ידיד ה, as our sages interpret this compliment (Shabbat 55) that Binyamin died only because of the venom of the original serpent, which brought death for human beings into this world. He, personally, had not committed any deed which would have warranted his death otherwise.

2ישכון לבטח עליו, Moses prays that this tribe should not join the rebellion against the dynasty of the house of David and become part of the Northern Kingdom.