Romans 9:8
that is, the children by natural descent are not thereby the children of God: but the children of the promise are alone considered as his posterity.
John 1:13
a birth which they had not from circumcision, nor from the constitution of the body, nor the institution of man, but from God.
Romans 4:11-16
and he received the sign of circumcision, as a seal of the justification by that faith, which the uncircumcised have: that he might be the father of all those who believe, tho' they are uncircumcised, that it might be accounted to them also for righteousness:
Romans 8:14
as many as are actuated by the spirit of God, they are the sons of God.
Galatians 3:26-29
for you are all the sons of God by faith in Christ Jesus.
Galatians 4:22-31
for it is there written, Abraham had two sons, the one by a bond-maid, the other by a free-woman.
1 John 3:1-2
Consider what proof the father has given us of his love, in allowing us to be called the sons of God: therefore the world does not know us, because it knew him not.