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

Christ's sufficiency for salvation is grounded in His role as our propitiation and high priest. Romans 3:25 states that He has been set forth as a propitiation through faith in His blood, declaring His righteousness for the remission of sins. Furthermore, 1 Corinthians 1:30 affirms that because of God, Christ has become our wisdom, righteousness, sanctification, and redemption. Christians are not meant to add anything to what Christ has achieved; His redemptive work sustains our hope. This means that our acceptance before God does not rest on our works but solely on Christ's merits.