Targum on II Chronicles 23:4: Onkelos Aramaic Translation

זֶ֥ה הַדָּבָ֖ר אֲשֶׁ֣ר תַּעֲשׂ֑וּ הַשְּׁלִשִׁ֨ית מִכֶּ֜ם בָּאֵ֣י הַשַּׁבָּ֗ת לַכֹּֽהֲנִים֙ וְלַלְוִיִּ֔ם לְשֹֽׁעֲרֵ֖י הַסִּפִּֽים׃

This is the thing that ye shall do: a third part of you, that come in on the sabbath, of the priests and of the Levites, shall be porters of the doors;