And the stranger that cometh nigh shall be put to death. — The word zar (stranger) here denotes one who was not of the tribe of Levi (Leviticus 22:10; Leviticus 22:12).
Related Commentaries of Numbers 1:51
Numbers 1:51
51 And when the tabernacle setteth forward, the Levites shall take it down: and when the tabernacle is to be pitched, the Levites shall set it up: and the stranger that cometh nigh shall be put to death.