How do we know that Christ's blood is sufficient for salvation?

Scripture provides clear evidence of the sufficiency of Christ's blood for salvation through consistent teachings on His atoning sacrifice. In Acts 20:28, the church is described as being purchased with the blood of God, signifying the value and power of Christ's sacrifice. Furthermore, 1 Peter 1:18-19 emphasizes that believers are redeemed not with perishable things, but with the precious blood of Christ, confirming His blood’s unmatched ability to redeem. This is further exemplified in the Passover narrative, where the blood marks God's people that they may escape judgment, symbolizing that salvation is exclusively found in the Lamb of God. This solid foundation of Scripture affirms that no other sacrifice is needed.