Hebrews 9:7
But [only] once a year the head priest goes alone into the inner room [i.e., Holy of Holies], and never without [animal] blood, which he offers [as a sacrifice] for himself and for the sins done in ignorance by the people.
Hebrews 9:25
Nor was it necessary for Him to offer Himself [to God] often, like the head priest does, who enters the Holy of Holies year after year with blood that belongs to others [i.e., the blood of animal sacrifices].
Hebrews 10:3
But those sacrifices were [only] a reminder of [the people's] sins year after year,
Hebrews 10:14
For by one offering [i.e., the sacrifice of Himself], Christ has made perfect forever those people who are being set apart for God.