Positive commandment 29 of 248

To keep fire always burning on the altar of the burnt-offering

Rembrandt, Moses with the Ten Commandments (1659), Gemäldegalerie Berlin. Public domain.

Maimonides

To keep fire always burning on the altar of the burnt-offering, as it is said, “The fire shall ever be burning on the altar” (Lev. 6:6).

KJV: The fire shall ever be burning upon the altar; it shall never go out.
ASV: Fire shall be kept burning upon the altar continually; it shall not go out.
WEB: Fire shall be kept burning on the altar continually; it shall not go out.
JPS: Fire shall be kept burning upon the altar continually; it shall not go out.