King James Version (KJV)
But let none come into the house of the LORD, save the priests, and they that minister of the Levites; they shall go in, for they are holy: but all the people shall keep the watch of the LORD.
Modern English
Let no one enter the house of the LORD except the priests and ministering Levites. They may enter, for they are holy, but all the people shall keep the charge of the LORD.
Hebrew
וְאַל יָב֣וֹא בֵ֣ית יְ֠הוָ֡ה כִּ֠י אִ֠ם הַ֠כֹּ֠הֲנִ֡ים וְ֠הַ֠מְשָׁ֠רְתִ֡ים לַ֠לְוִיִּ֡ם הֵ֠מָּ֡ה יָ֠בֹ֡אוּ כִּ֠י קֹ֠דֶ֡שׁ הֵ֠מָּ֡ה וְ֠כָ֠ל הָ֠עָ֡ם יִ֠שְׁמְר֡וּ מִשְׁמֶ֠רֶ֡ת יְהוָֽה׃
vʾal yabvoʾ beyt yhvah kiy ʾim hakohaniym vhamshartiym lalviyim hemah yaboʾv kiy qodesh hemah vkal haʿam yishmrv mishmeret yhvah