Romans 9:12-16

It was said unto her, The elder shall serve the younger.

As it is written, Jacob have I loved, but Esau have I hated.

What shall we say then? Is there unrighteousness with God? God forbid.

For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion.

So then it is not of him that willeth, nor of him that runneth, but of God that sheweth mercy.