Exodus 30:10

30:10 Aaron is to make atonement on its horns once in the year with some of the blood of the sin offering for atonement; once in the year he is to make atonement on it throughout your generations. It is most holy to the Lord.”

Hebrews 9:7

9:7 But only the high priest enters once a year into the inner tent, and not without blood that he offers for himself and for the sins of the people committed in ignorance.

Hebrews 9:25

9:25 And he did not enter to offer himself again and again, the way the high priest enters the sanctuary year after year with blood that is not his own,

Hebrews 10:3

10:3 But in those sacrifices there is a reminder of sins year after year.

Hebrews 10:14

10:14 For by one offering he has perfected for all time those who are made holy.