Romans 9:8
that is the children of the flesh the same are not the children of God; but the children of the promise are counted for the seed.
John 1:13
who were born not of bloods, nor of the will of the flesh, nor of the will of man, but of God.
Romans 4:11-16
And he received the sign of circumcision, and the seal of the righteousness of the faith which he had in uncircumcision: that he should be the father of all who believed, through uncircumcision; and righteousness should be imputed to them;
Romans 8:14
For so many as are led by the Spirit of God, these are the sons of God.
Galatians 3:26-29
For you are all the sons of God, through faith, in Christ Jesus;
1 John 3:1-2
Behold, what manner of love the Father has bestowed upon us, that we should be called the children of God; and we are. And on this account the world does not know us, because it did not know him.