New Living Translation
Remember, the fire must be kept burning on the altar at all times. It must never go out.

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

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

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.

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

World English Bible
Fire shall be kept burning on the altar continually; it shall not go out.

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

Leviticus 6:13 Additional Translations ...