Charles Ellicott Commentary Deuteronomy 33:12

"Of Benjamin he said, The beloved of Jehovah shall dwell in safety by him; He covereth him all the day long, And he dwelleth between his shoulders." — Deuteronomy 33:12 (ASV)

And of Benjamin. —It is generally agreed that this blessing points to the site of the place which Jehovah chose out of all the tribes of Israel, Jerusalem, in the tribe of Benjamin. The Hebrew is divided thus:—

“To Benjamin he said. Beloved of Jehovah!
He (Jehovah) will dwell in security upon him,
Covering him over all the day.
And between his shoulders (mountain slopes) He
has taken up His dwelling.”