This is the offering made by fire. The daily offering prescribed at Exodus 29:38-42, and which had presumably never been intermitted since, is specified again here because it formed the foundation of the whole sacrificial system.
Whatever else was offered was in addition to it, not in lieu of it. The sabbath and festival use of the Jews was developed out of the ferial use, and rested upon it. Hence in a connected republication of the law of offering it could not be omitted.
Without spot. תְמִימִם. Septuagint, ἀνώμους. This necessary qualification had not been expressed in the original ordinance, but in respect of other sacrifices had been continually required (see on Exodus 12:5; Le Exodus 1:3; Exodus 19:2; Hebrews 9:14; 1 Peter 1:19).