פירוש על במדבר 8:26

לשמר משמרת TO KEEP THE CHARGE — i.e. to encamp round about the tent of meeting in order to keep strangers away, and to erect and dismantle it at the time of finishing and beginning the journey.

(1) THEY MAY ASSIST/SERVE -- both groups -- THEIR BROTHER LEVITES ... BY STANDING GUARD, BUT THEY SHALL PERFORM NO LABOR.

ושרת את אחיו, “but shall minister with their brethren;” when this Levite turns fifty, he shall minister with the other Levites who have already turned fifty. This is based on Numbers 1,50: “they are to encamp immediately around the Tabernacle.”