What does it mean to be established in God's righteousness?

Being established in God's righteousness, as referenced in Isaiah 54:14, signifies a believer's secure position and acceptance before God, grounded not in their own merits but entirely in the righteousness of Christ. The verse states, 'In righteousness shalt thou be established,' indicating that the standing of believers before God is not arbitrary but based on the fulfilling of the law through Christ, who is the ultimate fulfillment of all righteousness.

Historic Reformed theology emphasizes the concept of imputed righteousness, where through faith, believers are viewed as righteous because they are united to Christ. This means that their justification is not based on works but solely on faith in the redemptive work of Jesus. Therefore, being established in God's righteousness allows believers to live with confidence, knowing that their eternal state is secure and their sins are fully forgiven. This truth fosters a life of worship and obedience, rooted in gratitude for the grace extended to them through Christ.