Why is understanding the concept of righteousness crucial for Christians?

Righteousness is a foundational concept in the Christian faith, illustrating the holy standard required by God. The sermon addresses the question of how sinful humanity can become righteous before a holy God. It affirms that righteousness cannot be earned through the law or human effort; rather, it is a gift granted through faith in Christ, who fulfilled all righteousness through His death and resurrection. This imputed righteousness is vital for salvation, as emphasized in 2 Corinthians 5:21, where Paul writes that Christ became sin for us so that we might become the righteousness of God in Him.