How do we know that God's will causes our new birth?

The assurance that our new birth is according to God's will is found in the statement from James 1:18, which confirms that it is 'of His own will' that we are regenerated. This points to the sovereignty of God in the process of salvation where our spiritual rebirth is not based on our choice but on His divine purpose. The New Testament, particularly in passages like Ephesians 1:4-5, reinforces that God chose us in Christ before the foundation of the world, further affirming the belief that our new birth stems from His eternal decree and compassionate heart for His people.