Leviticus 6:12

Overview - Leviticus 6
The trespass offering for sins done wittingly.
The law of the burnt offering;
14 and of the meat offering.
19 The offering at the consecration of a priest.
24 The law of the sin offering.
Treasury of Scripture Knowledge

Leviticus 6:12  (King James Version)
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
9:24 Numbers 4:13 Numbers 4:14 ; Mark 9:48 Mark 9:49 ; Hebrews 10:27

burn wood
1:7-9 Leviticus 3:3-5 Leviticus 3:9-11 Leviticus 3:14-16 Exodus 29:38-42 ; Nehemiah 13:31
The efficacy of the priesthood and mediation of Christ is perpetual, and we can never approach to God in his name, by day or night, unseasonably. The ministers of Christ should have the fire of their zeal constantly burning.