Of Benjamin - the beloved of the Lord - Alluding to his being particularly beloved of his father Jacob, Genesis 49:27, etc.
Shall dwell in safety by him - That is, by the Lord, whose temple, which is considered as his dwelling-place, was in the tribe of Benjamin, for a part of Jerusalem belonged to this tribe.
Shall cover him all the day - Be his continual protector; and he shall dwell between his shoulders - within his coasts, or in his chief city, viz., Jerusalem, where the temple of God was built, on his mountains Zion and Moriah, here poetically termed his shoulders.
Some object to our translation of the Hebrew ידיד yedid by the term beloved, and think the original should be divided as it is in the Samaritan, יד יד yad yad, the hand, even the hand of the Lord shall dwell for safety or protection, עליו alaiv, upon him. This makes a good sense, and the reader may choose.
He shall dwell between his shoulders - i. e., be supported by God as a son who is carried by his father (compare Deuteronomy 1:31). Benjamin was especially beloved of his father Genesis 35:18; Genesis 44:20; Moses now promises no less love to him from God Himself.