Romans 9:15

For He said to Moses, "I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion."

Exodus 33:19

And He said, I will make all My goodness pass before you, and I will proclaim the name of Jehovah before you. And I will be gracious to whom I will be gracious, and will have mercy on whom I will have mercy.

Romans 9:16

So then it is not of the one willing, nor of the one running, but of God, the One showing mercy.

Romans 9:18-19

Therefore He has mercy on whom He will have mercy, and whom He will, He hardens.

Exodus 34:6-7

And Jehovah passed by before him and proclaimed, Jehovah! Jehovah God, merciful and gracious, long-suffering, and abundant in goodness and truth,

Isaiah 27:11

When its branches are dried up, they shall be broken off; the women come and set them on fire; for it is a people of no understanding. Therefore His Maker will not have mercy on them, and He who formed them will not favor them.

Micah 7:18

Who is a God like You, who pardons iniquity and passes by the transgression of the remnant of His heritage? He does not keep His anger forever, because He delights in mercy.

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.

Bible References

I will have

Romans 9:16
So then it is not of the one willing, nor of the one running, but of God, the One showing mercy.
Exodus 33:19
And He said, I will make all My goodness pass before you, and I will proclaim the name of Jehovah before you. And I will be gracious to whom I will be gracious, and will have mercy on whom I will have mercy.
Exodus 34:6
And Jehovah passed by before him and proclaimed, Jehovah! Jehovah God, merciful and gracious, long-suffering, and abundant in goodness and truth,
Isaiah 27:11
When its branches are dried up, they shall be broken off; the women come and set them on fire; for it is a people of no understanding. Therefore His Maker will not have mercy on them, and He who formed them will not favor them.
Micah 7:18
Who is a God like You, who pardons iniquity and passes by the transgression of the remnant of His heritage? He does not keep His anger forever, because He delights in mercy.