Num Numbers, chapter Book of Numbers, chapter 3
But those that encamp before the tabernacle toward the east, [even] before the tabernacle of the congregation eastward, [shall be] Moshe [He Who Draws Out Of The Waters], and Aharon [Bright, Very High] and his sons, keeping the charge of the sanctuary for the charge of the people of Yisra’el [He Holds Onto The Heel Of God]; and the stranger that comes near shall be put to death.Num 1:51; Num 16:40; Num 18:7