How do we know the redemption through Christ's blood is sufficient?

The sufficiency of Christ's redemption is emphasized in 1 Peter 1:18-19, where Peter writes about being 'redeemed with the precious blood of Christ.' This indicates that unlike mere human efforts which cannot redeem us, Christ's sacrifice is perfect and without blemish. He fulfills the necessary requirements for our redemption, providing a full and complete atonement for our sins. Moreover, passages like Hebrews 9:12 further reinforce that it is by His own blood that He entered into the holy place, having obtained eternal redemption for us. Thus, believers can confidently rest in the finished work of Christ, knowing that His sacrifice is entirely sufficient for their salvation.