How does Christ fulfill all righteousness?

According to Reformed theology, Christ is our righteousness because He perfectly fulfilled the law's demands. This righteousness is imputed to believers, meaning His perfect obedience and sacrificial death are credited to those who trust in Him. The necessity of Christ's coming in the flesh underscores the reality that He lived the life we couldn't, laying the groundwork for our justification. Thus, through His obedience and sacrifice, we receive the full righteousness required by God for salvation.