Romans 9:11-16

And before her twin sons were born, God spoke to Rebekah and said: “The oldest will serve the youngest.” God spoke these words before the sons had done anything good or bad, which proves that God calls people not on the basis of their good or bad works, but according to his divine purpose. For in the words of Scripture: “Jacob I have chosen, but Esau I have rejected.” So, what does all this mean? Are we saying that God is unfair? Of course not! He had every right to say to Moses: “I will be merciful to whomever I choose and I will show compassion to whomever I wish.” Again, this proves that God’s choice doesn’t depend on how badly someone wants it or tries to earn it, but it depends on God’s kindness and mercy.