אֵ֗לֶּה שְׁמוֹת֙ בְּנֵ֣י אַהֲרֹ֔ן הַכֹּהֲנִ֖ים הַמְּשֻׁחִ֑ים אֲשֶׁר־מִלֵּ֥א יָדָ֖ם לְכַהֵֽן׃
These are the names of the sons of Aaron, the priests that were anointed, whom he consecrated to minister in the priest’s office.
Read kabbalistic (mystical) interpretation of Numbers 3:3: and classical mystical sources.