not be put out] The fire that came down from heaven, and consumed the burnt-offering, Leviticus 9:24. was to be kept perpetually burning, and neither to be put out, as it is here, nor yet by negligence suffered to goe out: and this might signifie, 1. That no humane devises but only that which comes by direction from heaven is to be admitted into Gods worship. 2. That God accepts no sacrifice, but that which is offered by that fire from heaven, the Spirit, Matthew 3:11. 3. Since it came down first as a testimony that God did graciously accept that first sacrifice, the continuance of it might intimate, that still he was well pleased with their sacrifices, performed according to his direction. fat of] The fat was not to be offered alone, but to be burnt upon the daily burnt-offering, for it was too small a matter of it selfe to be presented to God.