וּבַקְבֻּֽקְיָ֨ה וענו [וְעֻנִּ֧י] אֲחֵיהֶ֛ם לְנֶגְדָּ֖ם לְמִשְׁמָרֽוֹת׃
און בקבוקיָה, און עוני, זײערע ברידער, אַקעגן זײ אין װאַכן.
Rashi
in the watches as we find (in I Chronicles from ch. 24 on) that the Levites were divided into twenty- four watches.