Leviticus 6:9
Command Aaron and his sons, saying, This is the law of the burnt offering: It is the burnt offering, because of the burning upon the altar all night unto the morning, and the fire of the altar shall be burning in it.
Cross-reference
Leviticus 6:12 expands on the perpetual fire, adding details about morning wood and burning peace offerings on it.
Leviticus 6:13 reinforces the command: 'The fire shall ever be burning upon the altar; it shall never go out.'
Leviticus 1:1-17 gives initial burnt offering instructions, while Leviticus 6:9 adds priestly regulations for the same offering.
Leviticus 1:3 gives the layperson's regulations for a burnt offering, while here the priestly procedure is detailed.
Leviticus 7:37 summarizes the law of the burnt offering, placing this chapter's instructions in the broader legal context.
Numbers 28:3 specifies the daily burnt offering of two lambs, giving the specific offering for the continual fire commanded here.
Numbers 28:6 identifies this offering as the continual burnt offering ordained at Sinai, giving its origin.
Exodus 29:38-42 describes the daily burnt offering; Leviticus 6:9 adds that it must remain on the altar all night.
Numbers 29:6 mentions the daily burnt offering alongside monthly offerings, showing its role as a constant baseline.