Romans 9:15-18

9:15 For he says to Moses: “I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion.” 9:16 So then, it does not depend on human desire or exertion, but on God who shows mercy. 9:17 For the scripture says to Pharaoh: “For this very purpose I have raised you up, that I may demonstrate my power in you, and that my name may be proclaimed in all the earth.” 9:18 So then, God has mercy on whom he chooses to have mercy, and he hardens whom he chooses to harden.

Romans 9:22-23

9:22 But what if God, willing to demonstrate his wrath and to make known his power, has endured with much patience the objects of wrath prepared for destruction? 9:23 And what if he is willing to make known the wealth of his glory on the objects of mercy that he has prepared beforehand for glory –