What is the significance of the instruction to bring near the tribe of Levi and to set them before Aaron?
Bringing the tribe of Levi near and presenting them to Aaron speaks of a public and solemn ceremony, which would have served the purpose of publicly signalling the assumption of their duties as servants to the nation—in serving Aaron, the Levites will be serving the nation of Israel as a whole.1
6 Fais approcher la tribu de Lévi, et tu la placeras devant le sacrificateur Aaron, pour qu'elle soit à son service.