It is well worthy of observation, that the office of the high priest, is called a service. Reader, do not forget, that JESUS is called JEHOVAH's servant, and he most affectionately recommends himself to his disciples under this character. See Isaiah 42:1; Philippians 2:6-7; Luke 22:27.
Related Commentaries of Numbers 18:6
Numbers 18:6-7
6 And I, behold, I have taken your brethren the Levites from among the children of Israel: to you they are given as a gift for the LORD, to do the service of the tabernacle of the congregation.
7 Therefore thou and thy sons with thee shall keep your priest's office for every thing of the altar, and within the vail; and ye shall serve: I have given your priest's office unto you as a service of gift: and the stranger that cometh nigh shall be put to death.