How does the sovereignty of God relate to salvation?

The sovereignty of God is the bedrock upon which the assurance of salvation stands in Reformed theology. Scripture teaches that God is all-powerful and accomplishes all His will (Isaiah 14:27). This means that the work of salvation is not left to chance or to human effort but is guaranteed to succeed according to God’s eternal plan. His acts of grace, such as calling and justifying the elect, are performed with absolute authority and certainty, demonstrating that He alone is the Savior, as stated in Isaiah 45:22. This creates a deep confidence in believers as they rest in God's power to save.