Romans 9:16, 18-19
Romans 9:16 NKJV
So then it is not of him who wills, nor of him who runs, but of God who shows mercy.
Romans 9:18-19 NKJV
Therefore He has mercy on whom He wills, and whom He wills He hardens. You will say to me then, “Why does He still find fault? For who has resisted His will?”