I Chronicles 15:5 Midrash

לִבְנֵ֖י קְהָ֑ת אוּרִיאֵ֣ל הַשָּׂ֔ר וְאֶחָ֖יו מֵאָ֥ה וְעֶשְׂרִֽים׃ (ס)

of the sons of Kohath: Uriel the chief, and his brethren a hundred and twenty;

Read midrashic interpretation of I Chronicles 15:5: and classical rabbinic exegesis.