Romans 9:15
He said to Moses, "I will have mercy on the man on whom I choose to have mercy, and take pity on the man on whom I choose to take pity."
Romans 9:16
So it depends not on human will or exertion, but on the mercy of God.
Romans 9:18-19
So he has mercy on anyone he pleases, and hardens the heart of anyone he pleases.
Treasury of Scripture Knowledge
Summary
For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion.
I will have
Bible References
I will have
Romans 9:16
So it depends not on human will or exertion, but on the mercy of God.