How do we know that Christ's righteousness is credited to us?

The doctrine of imputation teaches that when a person believes in Christ, they are clothed with His righteousness, as seen in Isaiah 61:10, which states, 'He hath covered me with the robe of righteousness.' This robe symbolizes the perfect righteousness that Christ achieved through His life and sacrifice, which is then credited to the believer's account. Thus, believers stand justified before God, not because of their own works, but because they are accepted through Christ's atonement.