וְנָתַתָּ֣ה אֶל־הַכֹּהֲנִ֣ים הַלְוִיִּ֡ם אֲשֶׁ֣ר הֵם֩ מִזֶּ֨רַע צָד֜וֹק הַקְּרֹבִ֣ים אֵלַ֗י נְאֻ֛ם אֲדֹנָ֥י יְהוִ֖ה לְשָֽׁרְתֵ֑נִי פַּ֥ר בֶּן־בָּקָ֖ר לְחַטָּֽאת׃
Rashi on Ezekiel
the priests, the Levites [i.e.,] who are of the tribe of Levi.
Rashi on Ezekiel
who are of the seed of Zadok Since he was the High Priest who was the first to serve in the Temple, in the days of Solomon, they are [all] called by his name.