Romans 9:15-16

Amplified Bible

¹⁵ For He says to Moses, “I will have mercy on whomever I have mercy, and I will have compassion on whomever I have compassion.”^{(A) 16} So then God’s choice is not dependent on human will, nor on human effort [the totality of human striving], but on God who shows mercy [to whomever He chooses—it is His sovereign gift].