Romans 9:18

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 –