Romans 9:17-21 New Revised Standard Version (NRSV)
17 For the scripture says to Pharaoh, “I have raised you up for the very purpose of showing my power in you, so that my name may be proclaimed in all the earth.” 18 So then he has mercy on whomever he chooses, and he hardens the heart of whomever he chooses.
God’s Wrath and Mercy
19 You will say to me then, “Why then does he still find fault? For who can resist his will?” 20 But who indeed are you, a human being, to argue with God? Will what is molded say to the one who molds it, “Why have you made me like this?” 21 Has the potter no right over the clay, to make out of the same lump one object for special use and another for ordinary use?