How do we know that Christ's righteousness is sufficient for our salvation?

The sufficiency of Christ's righteousness for our salvation is rooted deeply in the doctrine of imputed righteousness, which is articulated in 2 Corinthians 5:21. This passage declares, 'For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.' This illustrates the great exchange: our sin is imputed to Christ, and in return, His perfect righteousness is imputed to us. By understanding this, Christians can grasp that their justification before God does not rely on their own righteousness or efforts, but solely on what Christ has accomplished. This foundational truth is vital for believers seeking assurance of their salvation, firmly reminding them that it’s not about their performance but about Christ's finished work on their behalf.