Why is Christ's righteousness important for salvation?

Christ's righteousness is pivotal because, according to 2 Corinthians 5:21, He was made sin for us so that we might become the righteousness of God in Him. This means that through Christ's perfect obedience and sacrificial death, He fulfills the requirements of divine justice that no human could meet. Romans 3:20 explains that no flesh will be justified by the deeds of the law, emphasizing our need for an external righteousness that Christ provides. In essence, without Christ's righteousness, we stand condemned; but through His grace and the gift of faith, we are declared justified, reflecting the profound truth of the gospel.