Romans 9:8
That is to say, it is not his physical descendants who are children of God, but his descendants born in fulfilment of the promise who are considered his true posterity.
John 1:13
owing their birth not to nature nor to any human or physical impulse, but to God.
Romans 4:11-16
and he was afterward given the mark of circumcision as the stamp of God's acknowledgment of the uprightness based on faith that was his before he was circumcised, so that he should be the forefather of all who, without being circumcised, have faith and so are credited with uprightness,
Romans 8:14
For all who are guided by God's Spirit are God's sons.
Galatians 3:26-29
For in Christ Jesus you are all sons of God through your faith.
Galatians 4:22-31
For the Scripture says that Abraham had two sons, one by the slave-girl, and one by the free woman.
1 John 3:1-2
Think what love the Father has had for us, in letting us be called God's children, for that is what we are. This is why the world does not know what we are??ecause it has never come to know him.