And thy brethren also of the tribe of Levi, the tribe of thy father, bring thou with thee, that they may be joined unto thee, and minister unto thee: but thou and thy sons with thee shall minister before the tabernacle of witness. Thy brethren also of the tribe of Levi - may be joined unto thee - There is a fine paronomasia, or play upon words, in the original. לוי Levi comes from the root לוה lavah, to join to, couple, associate: hence Moses says, the Levites, ילוו yillavu, shall be joined, or associated with the priests; they shall conjointly perform the whole of the sacred office, but the priests shall be principal, the Levites only their associates or assistants.
Related Commentaries of Numbers 18:2
Numbers 18:2
2 And thy brethren also of the tribe of Levi, the tribe of thy father, bring thou with thee, that they may be joined unto thee, and minister unto thee: but thou and thy sons with thee shall minister before the tabernacle of witness.