What does the Bible say about expiation?

Expiation refers to the concept of making amends or atonement for sin. In Deuteronomy 21, the law concerning unsolved murder is significant because it emphasizes that the focus is not on identifying the murderer but on atoning for the sins of the community. The heifer that is sacrificed represents the means by which forgiveness is obtained. The act of expiation is crucial for understanding God's plan for redeeming His people, highlighting the seriousness of sin and the necessity of a substitutionary sacrifice to secure forgiveness for those who believe.