Romans 9:15

No, indeed; the solution is found in His words to Moses, "Wherever I show mercy it shall be nothing but mercy, and wherever I show compassion it shall be simply compassion."

Romans 9:16

And from this we learn that everything is dependent not on man's will or endeavour, but upon God who has mercy. For the Scripture said to Pharaoh,

Romans 9:18-19

This is a proof that wherever He chooses He shows mercy, and wherever he chooses He hardens the heart.

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
And from this we learn that everything is dependent not on man's will or endeavour, but upon God who has mercy. For the Scripture said to Pharaoh,