Berean Study Bible
The fire shall be kept burning on the altar continually; it must not be extinguished.

King James Bible
The fire shall ever be burning upon the altar; it shall never go out.

American Standard Version
Fire shall be kept burning upon the altar continually; it shall not go out.

Darby Bible Translation
A continual fire shall be kept burning on the altar: it shall never go out.

Douay-Rheims Bible
This is the perpetual fire which shall never go out on the altar.

English Revised Version
Fire shall be kept burning upon the altar continually; it shall not go out.

Young's Literal Translation
fire is continually burning on the altar, it is not quenched.