GOD'S WORD® Translation
They will work for you, doing whatever work is necessary for the whole tent. But they must not come near the altar or the furnishings in the holy place, or they will die, and you will die, too.

American Standard Version
And they shall keep thy charge, and the charge of all the Tent: only they shall not come nigh unto the vessels of the sanctuary and unto the altar, that they die not, neither they, nor ye.

Berean Study Bible
And they shall attend to your duties and to all the duties of the Tent; but they must not come near to the furnishings of the sanctuary or the altar, or both they and you will die.

Douay-Rheims Bible
And the Levites shall watch to do thy commands, and about all the works of the tabernacle: only they shall not come nigh the vessels of the sanctuary nor the altar, lest both they die, and you also perish with them.

English Revised Version
And they shall keep thy charge, and the charge of all the Tent: only they shall not come nigh unto the vessels of the sanctuary and unto the altar, that they die not, neither they, nor ye.

King James Bible
And they shall keep thy charge, and the charge of all the tabernacle: only they shall not come nigh the vessels of the sanctuary and the altar, that neither they, nor ye also, die.

World English Bible
They shall keep your commands, and the duty of all the Tent: only they shall not come near to the vessels of the sanctuary and to the altar, that they not die, neither they, nor you.

Young's Literal Translation
'And they have kept thy charge, and the charge of all the tent; only, unto the vessels of the sanctuary and unto the altar they do not come near, and they die not, either they or you;

Numbers 18:3 Additional Translations ...