Numbers 5:6-8
“Tell the Israelites that when a man or woman acts unfaithfully against the LORD by committing any sin against another, that person is guilty / and must confess the sin he has committed. He must make full restitution, add a fifth to its value, and give all this to the one he has wronged. / But if the man has no relative to whom restitution can be made for the wrong, the restitution belongs to the LORD and must be given to the priest along with the ram of atonement, by which the atonement is made for him.

Leviticus 6:2-7
“If someone sins and acts unfaithfully against the LORD by deceiving his neighbor in regard to a deposit or security entrusted to him or stolen, or if he extorts his neighbor / or finds lost property and lies about it and swears falsely, or if he commits any such sin that a man might commit— / once he has sinned and becomes guilty, he must return what he has stolen or taken by extortion, or the deposit entrusted to him, or the lost property he found, ...

Leviticus 4:27-31
And if one of the common people sins unintentionally and does what is prohibited by any of the LORD’s commandments, he incurs guilt. / When he becomes aware of the sin he has committed, he must bring an unblemished female goat as his offering for that sin. / He is to lay his hand on the head of the sin offering and slaughter it at the place of the burnt offering. ...

Leviticus 7:1-10
“Now this is the law of the guilt offering, which is most holy: / The guilt offering must be slaughtered in the place where the burnt offering is slaughtered, and the priest shall splatter its blood on all sides of the altar. / And all the fat from it shall be offered: the fat tail, the fat that covers the entrails, ...

Numbers 15:27-31
Also, if one person sins unintentionally, he is to present a year-old female goat as a sin offering. / And the priest shall make atonement before the LORD on behalf of the person who erred by sinning unintentionally; and when atonement has been made for him, he will be forgiven. / You shall have the same law for the one who acts in error, whether he is a native-born Israelite or a foreigner residing among you. ...

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 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.

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, ...

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.

Romans 5:10-11
For if, when we were enemies of God, we were reconciled to Him through the death of His Son, how much more, having been reconciled, shall we be saved through His life! / Not only that, but we also rejoice in God through our Lord Jesus Christ, through whom we have now received reconciliation.

2 Corinthians 5:18-19
All this is from God, who reconciled us to Himself through Christ and gave us the ministry of reconciliation: / that God was reconciling the world to Himself in Christ, not counting men’s trespasses against them. And He has committed to us the message of reconciliation.

Ephesians 1:7
In Him we have redemption through His blood, the forgiveness of our trespasses, according to the riches of His grace

Colossians 1:14
in whom we have redemption, the forgiveness of sins.

Matthew 5:23-24
So if you are offering your gift at the altar and there remember that your brother has something against you, / leave your gift there before the altar. First go and be reconciled to your brother; then come and offer your gift.