וְלֹא־יִקְרְב֥וּ ע֛וֹד בְּנֵ֥י יִשְׂרָאֵ֖ל אֶל־אֹ֣הֶל מוֹעֵ֑ד לָשֵׂ֥את חֵ֖טְא לָמֽוּת׃
און די קינדער פֿון ישׂראל זאָלן מער ניט גענענען צום אוֹהל-מוֹעד, צו טראָגן אַ חטא און שטאַרבן.
Sefer HaChinukh
That a foreigner not serve in the Temple: That a foreigner not serve in the Temple — meaning to say anyone who is not from the seed of Aharon — as it is stated (Numbers 18:4), “and a foreigner will not approach you.” And the prevention of this is repeated with a different expression in Scripture, and that is as it is stated (Numbers 18:22), “And the Children of Israel shall not again approach the Tent of Meeting, to carry guilt, to die.”