How do we know that Christ's sacrifice is sufficient for our redemption?

The sufficiency of Christ's sacrifice is rooted in the biblical teachings found in Hebrews 10:12-14, where it states that after offering one sacrifice for sins forever, Christ sat down at the right hand of God, signifying the completion of the atoning work. This act confirmed that no further sacrifices are necessary because His sacrifice fulfilled the requirements of divine justice; thus, believers are perfected forever by His sacrifice. Moreover, Romans 8:32 reveals that God did not spare His own Son but delivered Him up for us all, demonstrating the depth of God's love and the effectiveness of Christ's redemptive work. Therefore, through faith in Jesus, we are justified and reconciled to God, emphasizing that His sacrifice is indeed sufficient and complete.