What role does grace play in the lives of the righteous?

In Reformed theology, grace is central to the believer's life. It is by grace that believers are justified—declared righteous before God. This grace is not only the starting point of the Christian life but also sustains them throughout. As God is sovereign, His grace is powerful, immutable, and effective in bringing about salvation and sanctification. Believers recognize that their righteousness is not based on their works but solely on God's grace, aligning with Ephesians 2:8-9, which states that by grace we have been saved through faith, and not by works.