he shall present the goat chosen by lot for the LORD and sacrifice it as a sin offering.
The Jewish writers say that for seven days before the day of expiation the high priest was to retire from his own house, and to dwell in a chamber of the temple, that he might prepare himself for the service of this great day.
Commenting on Leviticus 16:5-14
And Aaron shall bring the goat on which the Lord's lot fell,.... Alluding to the manner of taking out the lot by the high priest, who, when he took it out, lifted it up with his hand, and then let it down, and put it on the head of the goat; after which he brought it to the altar to be sacrificed: and offer him...
Lev 16:6-10 With the bullock Aaron was to make atonement for himself and his house. The two he-goats he was to place before Jehovah (see Lev 1:5), and “give lots over them,” i.e., have lots cast upon them, one lot for Jehovah, the other for Azazel.
Commenting on Leviticus 16:6-10