Romans 9:8
This means that it is not the children born in the course of nature who are God's Children, but it is the children born in fulfillment of the Promise who are to be regarded as Abraham's descendants.
John 1:13
For not to natural conception, nor to human instincts, nor to will of man did they owe the new Life, but to God.
Romans 4:11-16
Not after, but before. And it was as a sign of this that he received the rite of circumcision-to attest the righteousness due to the faith of an uncircumcised man-in order that he might be the father of all who have faith in God even when uncircumcised, that they also may be regarded by God as righteous;
Romans 8:14
All who are guided by the Spirit of God are Sons of God.
Galatians 3:26-29
For you are all Sons of God, through your faith in Christ Jesus.
Galatians 4:22-31
Scripture says that Abraham had two sons, one the child of the slave-woman and the other the child of the free woman.
1 John 3:1-2
Think what love the Father has shown us in allowing us to be called 'Children of God'; as indeed we are. The reason why the world does not know us is that it has not learned to know him.