Leviticus 6:9 - Matthew Poole's English Annotations on the Holy Bible

Hitherto he hath prescribed the sacrifices themselves, now he comes to the manner of them. The law of the burnt-offering, to wit, of the daily one, of which Exodus 29:38 Numbers 28:3, as the following words show. Because of the burning upon the altar all night unto the morning: the meaning is, the evening burnt-offering was to be so managed and laid on piece after piece, that the fire might be constantly maintained by it. It is to be understood, that the morning burnt-offerings were to be kept burning all the day from morning to night also; but he mentions not that because there was so great a number and such a constant succession of sacrifices in the day-time, that there needed no law for feeding and keeping in the fire then; the only danger was for the night, when other sacrifices were not offered, but only the evening burnt-offering, which if it had been consumed quickly, as the morning burnt-offering was, there had been danger of the going out of that fire, which they were commanded diligently and constantly to keep in and maintain here below, Leviticus 6:13.