Acts 17:28-29 – ALL are God’s created children by natural birth.
Romans 8:14-17 – SOME are legally adopted heirs by faith in Christ.
Hebrews 1:1-4 – ONE is the only begotten heir: Jesus Christ by eternal right.

John 3:16 – “For God so loved the world, that He gave His only begotten Son, that whoever believes in Him shall not perish, but have eternal life.”