How do we know that Jesus' blood redeems us?

The knowledge of Jesus' blood redeeming us is rooted in the revelation of Scripture and the work of the Holy Spirit in our hearts. As 1 Peter 1:18-20 illustrates, it is by the blood of Christ that we are redeemed, and this was foreordained before the foundation of the world. The blood is significant because it signifies the fulfillment of God's justice and mercy—Jesus took upon Himself our sins and paid the full penalty. Furthermore, His resurrection proves the effectiveness of His sacrifice; if He had not risen, it would indicate that sin had not been fully atoned for (Romans 4:25). Thus, we trust in the precious blood of Jesus and the assurance provided by His victory over death.