Or HaChaim on Deuteronomy 33:12/אור החיים על דברים ל״ג:י״ב

1 לבנימין אמר, Concerning Benjamin, he said, etc. The word לבנימין was said by Moses, whereas the word אמר is the Torah speaking. If it were not so how could we understand these two words? The following verse in which we have וליוסף אמר, or ולזבולון אמר must also be understood in this way.

2ישכון לבטח עליו, "may he dwell safely alongside Him." Seeing that the Temple was in the territory of Benjamin it is natural that that tribe should enjoy the greatest feeling of security. After all, who would dare attack the king? [G'd who dwells in the Sanctuary. Ed.]