What does the Bible say about being children of God?

Scripture reveals the profound truth that believers are not merely created beings but are adopted as sons and daughters of God through faith in Christ. John 1:12-13 states, 'But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name: which were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.' This emphasizes the divine initiative in our spiritual rebirth and adoption. Likewise, Ephesians 1:4-5 reinforces that God chose us in Him before the foundation of the world to be adopted as children through Jesus Christ, according to the good pleasure of His will. Thus, being a child of God is rooted in His sovereign grace and purpose.