Why is the concept of God's sovereignty important for Reformed theology?

In Reformed theology, God's sovereignty is a core tenet that emphasizes His absolute control over all aspects of life, including salvation. This sovereignty assures believers that God is the author of their faith and salvation, not reliant on human merit. Scriptures such as Romans 8:28-30 exemplify this, highlighting that God works all things for good and has predestined those He calls. Recognizing God's sovereignty instills confidence in His plans and purposes, affirming that His grace alone is sufficient for salvation and that human actions do not thwart His divine will.