Romans 9
15 Ref For he said to Moses, "I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion."
16 Ref So then it is not of him who wills, nor of him who runs, but of God who has mercy.
17 Ref For the Scripture says to Pharaoh, "For this very purpose I caused you to be raised up, that I might show in you my power, and that my name might be published abroad in all the earth."
18 Ref So then, he has mercy on whom he desires, and he hardens whom he desires.