Leviticus 6:13-15

Amplified Bible

¹³ The fire shall be burning continually on the altar; it shall not [be allowed to] go out.

¹⁴ ‘Now this is the law of the grain offering: the sons of Aaron shall present it before the Lord in front of the altar. ¹⁵ One of them shall take up from it a handful of the fine flour of the grain offering with its oil and all the incense that is on the grain offering, and he shall offer it up in smoke on the altar, a sweet and soothing aroma, as the memorial offering to the Lord.