ESV: Fire shall be kept burning on the altar continually; it shall not go out.
NIV: The fire must be kept burning on the altar continuously; it must not go out.
NASB: Fire shall be kept burning continually on the altar; it is not to go out.
CSB: Fire must be kept burning on the altar continually; it must not go out.
NLT: Remember, the fire must be kept burning on the altar at all times. It must never go out.
KJV: The fire shall ever be burning upon the altar; it shall never go out.
NKJV: A fire shall always be burning on the altar; it shall never go out.