What is the nature of God's grace in salvation?

God's grace is the foundation of salvation, characterized by its unconditional nature and sovereignty. Ephesians 1:4-5 illustrates that believers were chosen in Christ before the foundation of the world, demonstrating that salvation is entirely a work of God's grace. Regeneration by the Holy Spirit brings about true repentance and faith, enabling individuals to see their need for Christ. This grace not only initiates salvation but also sustains believers throughout their Christian journey, affirming God's complete control over the process of salvation.