Leviticus 6:12

12 The fire on the altar must be kept burning; it must not go out. Every morning the priest is to add firewood and arrange the burnt offering on the fire and burn the fat of the fellowship offerings on it.

Read Leviticus 6:12 Using Other Translations

And the fire upon the altar shall be burning in it; it shall not be put out: and the priest shall burn wood on it every morning, and lay the burnt offering in order upon it; and he shall burn thereon the fat of the peace offerings.
The fire on the altar shall be kept burning on it; it shall not go out. The priest shall burn wood on it every morning, and he shall arrange the burnt offering on it and shall burn on it the fat of the peace offerings.
Meanwhile, the fire on the altar must be kept burning; it must never go out. Each morning the priest will add fresh wood to the fire and arrange the burnt offering on it. He will then burn the fat of the peace offerings on it.