Romans 9:15-20

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.

9:19 You will say to me then, “Why does he still find fault? For who has ever resisted his will?” 9:20 But who indeed are you – a mere human being – to talk back to God? Does what is molded say to the molder, “Why have you made me like this?”