Bible Cross References
Now we, brethren, as Isaac was, are the children of promise.
Galatians 4:23
His son by the slave woman was born in the usual way, but his son by the free woman was born as a result of God's promise.
Galatians 3:29
If you belong to Christ, then you are the descendants of Abraham and will receive what God has promised.
Acts 3:25
The promises of God through his prophets are for you, and you share in the covenant which God made with your ancestors. As he said to Abraham, 'Through your descendants I will bless all the people on earth.'
Romans 4:13-18
13
When God promised Abraham and his descendants that the world would belong to him, he did so, not because Abraham obeyed the Law, but because he believed and was accepted as righteous by God.
14
For if what God promises is to be given to those who obey the Law, then faith means nothing and God's promise is worthless.
15
The Law brings down God's anger; but where there is no law, there is no disobeying of the law.
16
And so the promise was based on faith, in order that the promise should be guaranteed as God's free gift to all of Abraham's descendants---not just to those who obey the Law, but also to those who believe as Abraham did. For Abraham is the spiritual father of us all;
17
as the scripture says, "I have made you father of many nations." So the promise is good in the sight of God, in whom Abraham believed---the God who brings the dead to life and whose command brings into being what did not exist.
18
Abraham believed and hoped, even when there was no reason for hoping, and so became "the father of many nations." Just as the scripture says, "Your descendants will be as many as the stars."
Romans 9:8
This means that the children born in the usual way are not the children of God; instead, the children born as a result of God's promise are regarded as the true descendants.
Romans 9:9
For God's promise was made in these words: "At the right time I will come back, and Sarah will have a son."