Romans 9:8
That is, not the children by natural descent are children of God, but the children to whom the promise is made are accounted as the offspring.
John 1:13
who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.
Romans 4:11-16
And he received the outward sign of circumcision as a seal of the righteousness of the faith which he had while he was uncircumcised; that he might be the father of all the uncircumcised who have faith, so that righteousness might be put to their account also;
Romans 8:14
For as many as are led by the Spirit of God, they are sons of God.
Galatians 3:26-29
For ye are all sons of God through faith in Christ Jesus;
Galatians 4:22-31
For it is written, that Abraham had two sons; the one by the bondwoman, the other by the freewoman.
1 John 3:1-2
Behold what manner of love the Father hath bestowed upon us, that we should be called children of God l For this cause the world knoweth us not, because it knew him not.