Romans 9:10-15

Not only that, but Rebekah’s children were conceived at the same time by our father Isaac. Yet, before the twins were born or had done anything good or bad – in order that God’s purpose in election might stand: not by works but by him who calls – she was told, ‘The older will serve the younger.’ Just as it is written: ‘Jacob I loved, but Esau I hated.’ What then shall we say? Is God unjust? Not at all! For he says to Moses, ‘I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion.’