Numbers 29:11

The sin offering of atonement. This is the ordinance from which the festival derived its special name (see Lev. 16). Note that Heb. 9:7-12, 23-28 is based on the description of Lev. 16. The blood of the sin offering of atonement was carried by the high priest into the most holy place. The blood of the bullock offered as a sin offering for the family of Aaron was also carried into the most holy place (Lev. 16:11, 14). Aside from these two, blood was never carried into the holy of holies.

The continual burnt offering. Again it is stressed that the various offerings mentioned were not to be omitted, not even on the great Day of Atonement. Even that high day was to begin with the continual burnt offering and the other offerings belonging to it. These would be followed by the sin offering of this verse. Then would come the sacrifice of atonement as given in Lev. 16.