I Chronicles 6:3 Kabbalah

וּבְנֵ֖י קְהָ֑ת עַמְרָ֣ם וְיִצְהָ֔ר וְחֶבְר֖וֹן וְעֻזִּיאֵֽל׃

And the sons of Kohath were Amram, and Izhar, and Hebron, and Uzziel.

Read kabbalistic (mystical) interpretation of I Chronicles 6:3: and classical mystical sources.