Romans 9:10-12

And even more to the point is the case of Rivkah; for both her children were conceived in a single act with Yitz’chak, our father;

and before they were born, before they had done anything at all, either good or bad (so that God’s plan might remain a matter of his sovereign choice, not dependent on what they did, but on God, who does the calling),

it was said to her, “The older will serve the younger.”