Hebrews 1:3

who being the brightness of his glory, and the character of his person, and holding up all things by the word of his power, having made purgation of the sins, sat down on the right hand of the Majesty on high;

Hebrews 9:7

and into the second comes the high priest alone once a year, not without blood, which he offers for himself, and the errors of the people;

Hebrews 9:22-23

And according to the law, almost all things are purified by blood; and without the shedding of blood there is no remission.

Hebrews 9:25

neither in order that he may frequently offer up himself, as the high priest goes into the holies once a year with the blood of another;

Treasury of Scripture Knowledge

Summary

And Aaron shall make an atonement upon the horns of it once in a year with the blood of the sin offering of atonements: once in the year shall he make atonement upon it throughout your generations: it is most holy unto the LORD.

Bible References

Aaron

Hebrews 1:3
who being the brightness of his glory, and the character of his person, and holding up all things by the word of his power, having made purgation of the sins, sat down on the right hand of the Majesty on high;
Hebrews 9:7
and into the second comes the high priest alone once a year, not without blood, which he offers for himself, and the errors of the people;