Hebrews 9:7
But only the high priest entered the second room, and then only once a year, and never without blood, which he offered for himself and for the sins the people had committed in ignorance.

Hebrews 10:1-4
For the law is only a shadow of the good things to come, not the realities themselves. It can never, by the same sacrifices offered year after year, make perfect those who draw near to worship. / If it could, would not the offerings have ceased? For the worshipers would have been cleansed once for all, and would no longer have felt the guilt of their sins. / Instead, those sacrifices are an annual reminder of sins, ...

Numbers 15:22-29
Now if you stray unintentionally and do not obey all these commandments that the LORD has spoken to Moses— / all that the LORD has commanded you through Moses from the day the LORD gave them and continuing through the generations to come— / and if it was done unintentionally without the knowledge of the congregation, then the whole congregation is to prepare one young bull as a burnt offering, a pleasing aroma to the LORD, with its grain offering and drink offering according to the regulation, and one male goat as a sin offering. ...

Hebrews 9:22
According to the law, in fact, nearly everything must be purified with blood, and without the shedding of blood there is no forgiveness.

1 John 1:7-9
But if we walk in the light as He is in the light, we have fellowship with one another, and the blood of Jesus His Son cleanses us from all sin. / If we say we have no sin, we deceive ourselves, and the truth is not in us. / If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.

Romans 3:25
God presented Him as an atoning sacrifice in His blood through faith, in order to demonstrate His righteousness, because in His forbearance He had passed over the sins committed beforehand.

Hebrews 5:1-3
Every high priest is appointed from among men to represent them in matters relating to God, to offer gifts and sacrifices for sins. / He is able to deal gently with those who are ignorant and misguided, since he himself is subject to weakness. / That is why he is obligated to offer sacrifices for his own sins, as well as for the sins of the people.

Numbers 28:15
In addition to the regular burnt offering with its drink offering, one male goat is to be presented to the LORD as a sin offering.

2 Corinthians 5:21
God made Him who knew no sin to be sin on our behalf, so that in Him we might become the righteousness of God.

Isaiah 53:10
Yet it was the LORD’s will to crush Him and to cause Him to suffer; and when His soul is made a guilt offering, He will see His offspring, He will prolong His days, and the good pleasure of the LORD will prosper in His hand.

Hebrews 7:27
Unlike the other high priests, He does not need to offer daily sacrifices, first for His own sins and then for the sins of the people; He sacrificed for sin once for all when He offered up Himself.

1 Peter 2:24
He Himself bore our sins in His body on the tree, so that we might die to sin and live to righteousness. “By His stripes you are healed.”

Numbers 6:11
And the priest is to offer one as a sin offering and the other as a burnt offering to make atonement for him, because he has sinned by being in the presence of the dead body. On that day he must consecrate his head again.

Romans 8:3
For what the law was powerless to do in that it was weakened by the flesh, God did by sending His own Son in the likeness of sinful man, as an offering for sin. He thus condemned sin in the flesh,

Hebrews 9:11-14
But when Christ came as high priest of the good things that have come, He went through the greater and more perfect tabernacle that is not made by hands and is not a part of this creation. / He did not enter by the blood of goats and calves, but He entered the Most Holy Place once for all by His own blood, thus securing eternal redemption. / For if the blood of goats and bulls and the ashes of a heifer sprinkled on those who are ceremonially unclean sanctify them so that their bodies are clean, ...