Are you sure about that?
John 1:11&12
...Has nothing to do with "we are not all God's children".
OK, well you are correct. I also came across Colossians 1:16, John 11:52, Romans 8:14-17, 1 John 3:1-10, Ephesians 1:5, Ephesians 2:3, Romans 9:8, James 4:4, 1 John 3:8, John 8:43-44, Galatians 3:26, and Galatians 4:5-6.