What does the Bible say about the significance of Jesus' blood?

Jesus taught His disciples that His blood is the blood of the New Testament, which signifies the new covenant established between God and His people. His blood was shed for many, illustrating the substitutionary atonement He provided for sinners. This sacrifice fulfilled the requirements of God's justice and mercy, enabling reconciliation between God and His chosen ones. The blood of Christ cleanses us from all unrighteousness and is central to the gospel of salvation, emphasizing that salvation is accomplished solely through faith in Him.