Why is Jesus' sacrifice significant for Christians?

Jesus' sacrifice is of paramount importance for Christians as it forms the cornerstone of our faith. Hebrews 2:17 explains that Jesus became our merciful and faithful high priest, making reconciliation for the sins of the people. Through His suffering and death, He paid the penalty for sin that we could not bear ourselves. This act of love allows believers to stand justified before God, free from condemnation. Additionally, His resurrection confirms the victorious nature of His sacrifice, enabling believers to have confidence in eternal life.