Matthew Poole and continuators on Leviticus 9:9

9 And the sons of Aaron brought the blood unto him, and he dipt his finger in the blood, and put it upon the horns of the altar , and poure[illegible: 1+ letters] out the blood at the bottom of the altar.

To wit, of burnt-offerings of which alone he speaks both in the foregoing and following words, and the blood was poured out at the bottom of this altar onely, not of the altar of incense, as appears from Lev. 4. 7. where indeed there is mention of putting some of the blood upon the horns of the altar of incense, in this case of the Priests sacrificing for his own sins. But there seems to be a double difference, 1. that sacrifice was offered for some particular sin, this for his sins indefinitely. 2. there he is supposed to be compleat in his office, and here he is but entring into his office, and therefore must prepare and sanctify himself by this offering upon the brazen Altar in the court before he can be admitted into the holy place where the Altar of incense was. And the like is to be said for the difference between the sin-offering for the people here, and Lev. 4. 17, 18.