וְאֵ֣ת ׀ צָד֣וֹק הַכֹּהֵ֗ן וְאֶחָיו֙ הַכֹּ֣הֲנִ֔ים לִפְנֵ֖י מִשְׁכַּ֣ן יְהוָ֑ה בַּבָּמָ֖ה אֲשֶׁ֥ר בְּגִבְעֽוֹן׃
און צָדוֹק דעם כּהן, און זײַנע ברידער די כּהנים, פֿאַר דעם מִשכּן פֿון גאָט אױף דער בָמה װאָס אין גִבֿעוֹן,
Rashi
And Zadok the priest was the head, and his brethren, the priests with him, David stationed before the Tabernacle of the Lord, which was in Gibeon, and he did not leave any priest with the Ark, because they did not have to perform the sacrificial service