How do we know righteousness is important for Christians?

In Christianity, righteousness is not merely about moral behavior but a legal standard of perfection, ultimately embodied in Jesus Christ. Romans 3:23 reminds us that all have sinned and fall short of the glory of God. True righteousness is found in Christ alone, whose imputed righteousness secures believers' standing before God. Without understanding the significance of Christ's righteousness, no one can comprehend the gravity of sin or the necessity of salvation. Thus, righteousness forms a foundation of Christian faith as it assures believers of their justification and acceptance before God based on Christ's completed works.