How do we know Jesus' sacrifice is sufficient for our salvation?

The sufficiency of Jesus' sacrifice rests on the biblical truth that He offered Himself as the perfect atoning sacrifice for sin. Hebrews 10:14 declares, 'For by one offering He hath perfected forever them that are sanctified.' Unlike the repeated animal sacrifices under the Old Covenant that could never truly take away sin, Christ's one-time sacrifice covered all sin, providing complete redemption. This establishes Christ as the sole and all-sufficient means of salvation, fulfilling the sacrificial requirements of the law and reconciling us to God.