Romans 9:15-16

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.

Romans 9:23-24

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 – 9:24 even us, whom he has called, not only from the Jews but also from the Gentiles?