Leviticus 6:13-15

New Revised Standard Version Catholic Edition

¹³ A perpetual fire shall be kept burning on the altar; it shall not go out.

¹⁴ This is the ritual of the grain offering: The sons of Aaron shall offer it before the Lord, in front of the altar. ¹⁵ They shall take from it a handful of the choice flour and oil of the grain offering, with all the frankincense that is on the offering, and they shall turn its memorial portion into smoke on the altar as a pleasing odor to the Lord.