וּבַקְבֻּֽקְיָ֨ה וענו [וְעֻנִּ֧י] אֲחֵיהֶ֛ם לְנֶגְדָּ֖ם לְמִשְׁמָרֽוֹת׃
Bakboukia et Ounni, leurs frères, les assistaient selon l’ordre des sections.
Rashi
in the watches as we find (in I Chronicles from ch. 24 on) that the Levites were divided into twenty- four watches.