Biological and Spiritual Progeny

And these are the names of the sons of Aaron, Nadav, the firstborn, and Avihu, Elazar and Itamar. These are the names of the sons of Aaron, the priests who were anointed whom he consecrated to minister in the priest’s office.                                         Numbers 3:2-3

The phrase “the sons of Aaron” is repeated, while the sons of Moses are not even mentioned, despite the introductory verse [1]: “And these are the descendants of Aaron and Moses.” The importance of Moses’ sons was only in their being his biological progeny, while Aaron’s sons were his spiritual descendants as well, and were therefore “consecrated to minister in the priest’s office.”