How do we know salvation is by God's will?

The New Testament consistently presents salvation as an act of God's sovereign grace. Ephesians 1:4 states that we were chosen in Christ before the foundation of the world, indicating that our salvation is not contingent upon our will but is an expression of God's eternal purpose. Additionally, John 1:13 clarifies this further: 'Which were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.' This emphasizes that the new birth—essential for salvation—is solely the result of God's will, showcasing that He alone initiates and accomplishes salvation.