New Living Translation
The first day of the festival will be an official day for holy assembly, and no ordinary work may be done on that day.

American Standard Version
In the first day shall be a holy convocation: ye shall do no servile work;

Berean Study Bible
On the first day there is to be a sacred assembly; you must not do any regular work.

Douay-Rheims Bible
And the first day of them shall be venerable and holy: you shall not do any servile work therein.

English Revised Version
In the first day shall be an holy convocation; ye shall do no servile work:

King James Bible
In the first day shall be an holy convocation; ye shall do no manner of servile work therein:

World English Bible
In the first day shall be a holy convocation: you shall do no servile work;

Young's Literal Translation
in the first day is an holy convocation, ye do no servile work,

Numbers 28:18 Additional Translations ...