Romans 9:10-18

This son was our ancestor Isaac. When he married Rebekah, she gave birth to twins. But before they were born, before they had done anything good or bad, she received a message from God. (This message shows that God chooses people according to his own purposes; he calls people, but not according to their good or bad works.) She was told, “Your older son will serve your younger son.” In the words of the Scriptures, “I loved Jacob, but I rejected Esau.” Are we saying, then, that God was unfair? Of course not! For God said to Moses, “I will show mercy to anyone I choose, and I will show compassion to anyone I choose.” So it is God who decides to show mercy. We can neither choose it nor work for it. For the Scriptures say that God told Pharaoh, “I have appointed you for the very purpose of displaying my power in you and to spread my fame throughout the earth.” So you see, God chooses to show mercy to some, and he chooses to harden the hearts of others so they refuse to listen.