Romans 9:8
That is, not the children of the flesh are the children of God, but the children of the promise are counted for the seed.
John 1:13
Who were born, not of blood, nor by the will of the flesh, nor by the will of man, but of God.
Romans 4:11-16
And he received the sign of circumcision, a seal of the righteousness of the faith, which he had in uncircumcision, that he might be the father of all who believe in uncircumcision, that righteousness may be imputed to them also,
Romans 8:14
For as many as are led by the Spirit of God, they are the Sons of God.
Galatians 3:26-29
For ye are all sons of God by faith in Jesus Christ.
Galatians 4:22-31
For it is written, Abraham had two sons, one by the bond-woman, another by the free-woman.
1 John 3:1-2
Behold what manner of love the Father hath bestowed upon us, that we should be called the Sons of God; therefore the world knoweth us not, because it knew him not.