6Their condition does not mean that God’s word has failed. Not everyone in the family line of Israel really belongs to Israel. 7Not everyone in Abraham’s family line is really his child. Not at all! Scripture says, “Your family line will continue through Isaac.” (Genesis 21:12)

8In other words, God’s children are not just Abraham’s natural children. Instead, they are the children God promised to him. They are the ones considered to be Abraham’s children. 9God promised, “I will return at the appointed time. Sarah will have a son.” (Genesis 18:10, 14)

10And that’s not all. Rebekah’s children had the same father. He was our father Isaac.

11Here is what happened. Rebekah’s twins had not even been born. They hadn’t done anything good or bad yet. So they show that God’s purpose is based firmly on his free choice. 12It was not because of anything they did but because of God’s choice. So Rebekah was told, “The older son will serve the younger one.” (Genesis 25:23) 13It is written, “I chose Jacob instead of Esau.” (Malachi 1:2, 3)

14What should we say then? Is God unfair? Not at all! 15He said to Moses,

“I will have mercy on whom I have mercy.

I will show love to those I love.” (Exodus 33:19)

16So it doesn’t depend on what we want or do. It depends on God’s mercy.

17In Scripture, God says to Pharaoh, “I had a special reason for making you king. I decided to use you to show my power. I wanted my name to become known everywhere on earth.” (Exodus 9:16) 18So God does what he wants to do. He shows mercy to one person and makes another stubborn.

19One of you will say to me, “Then why does God still blame us? Who can oppose what he wants to do?” 20But you are a mere man. So who are you to talk back to God? Scripture says, “Can what is made say to the one who made it, ‘Why did you make me like this?’ ” (Isaiah 29:16; 45:9) 21Isn’t the potter free to make different kinds of pots out of the same lump of clay? Some are for special purposes. Others are for ordinary use.

22What if God chose to show his great anger? What if he chose to make his power known? That is why he put up with people he was angry with. They had been made to be destroyed. 23What if he did that to show the riches of his glory to others? Those are the people he shows his mercy to. He had prepared them to receive his glory. 24We are those people. He has chosen us. We do not come only from the Jewish race. Many of us are not Jews. 25God says in Hosea,

“I will call those who are not my people ‘my people.’

I will call the one who is not my loved one ‘my loved one.’ ” (Hosea 2:23)

26He also says,

“Once it was said to them,

‘You are not my people.’

In that very place they will be called ‘children of the living God.’ ” (Hosea 1:10)

27Isaiah cries out concerning Israel. He says,

“The number of people from Israel may be like the sand by the sea.

But only a few of them will be saved.

28 The Lord will carry out his sentence.

He will be quick to carry it out on earth, once and for all.” (Isaiah 10:22, 23)

29Earlier Isaiah had said,

“The Lord who rules over all

left us children and grandchildren.

If he hadn’t, we would have become like Sodom.

We would have been like Gomorrah.” (Isaiah 1:9)