Why is it important that Christ is our righteousness?

The sermon points out that our own righteousness is like 'filthy rags' (Isaiah 64:6), emphasizing our need for Christ's imputed righteousness. In 1 Corinthians 1:30, it's affirmed that Christ is made unto us righteousness, sanctification, and redemption. This means that through faith in Him, we are seen as just before God, not based on our works but on Christ's perfect work. It is vital for Christians to understand that true righteousness comes only from Jesus, allowing us to have a relationship with God.