How do we know Christ's suffering for us is sufficient?

The sufficiency of Christ's suffering is foundational to Reformed theology, as it holds that His death on the cross fully satisfied God's justice and completely atoned for the sins of His people. This certainty stems from the doctrine of imputation, where Christ's righteousness is credited to believers, making them just in God's sight. Romans 8:1 affirms that there is no condemnation for those who are in Christ Jesus, highlighting that His suffering was not in vain. Furthermore, Christ's victory over sin and death assures believers that they are secure in their salvation, anchored in His perfect sacrifice.