How do we know the blood of Christ is effective for forgiveness?

The effectiveness of Christ's blood for forgiveness is rooted in its role as a propitiation for our sins. Romans 3:25 refers to Jesus as the one God set forth to declare His righteousness for the remission of sins. This means that through His sacrifice, all transgressions are covered, and believers experience a continuous renewal of forgiveness as they repent and return to Him. The belief in the cleansing power of His blood assures us that our sins are eternally forgiven, and we stand justified before God, providing deep assurance and peace.