Who is joined to Aharon (Aaron) and his sons and what are they to do and not do?

Answer From The Annual Reading Schedule - Week 36 Notes For Numbers: The Lewites are joined to Aharon (Aaron) and His Sons to serve them and to guard their charge, and the duty of the tent, but not come near the furnishings of the Set-Apart place or the altar (Numbers 18:2-4, 8).