Romans 9:15

for to Moses He saith, 'I will do kindness to whom I do kindness, and I will have compassion on whom I have compassion;'

Exodus 33:19

and He saith, 'I cause all My goodness to pass before thy face, and have called concerning the Name of Jehovah before thee, and favoured him whom I favour, and loved him whom I love.'

Romans 9:16

so, then -- not of him who is willing, nor of him who is running, but of God who is doing kindness:

Romans 9:18-19

so, then, to whom He willeth, He doth kindness, and to whom He willeth, He doth harden.

Exodus 34:6-7

and Jehovah passeth over before his face, and calleth: 'Jehovah, Jehovah God, merciful and gracious, slow to anger, and abundant in kindness and truth,

Isaiah 27:11

In the withering of its branch it is broken off, Women are coming in setting it on fire, For it is not a people of understanding, Therefore pity it not doth its Maker, And its Former doth not favour it.

Micah 7:18

Who is a God like Thee? taking away iniquity, And passing by the transgression of the remnant of His inheritance, He hath not retained for ever His anger, Because He -- He delighteth in kindness.

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 -- not of him who is willing, nor of him who is running, but of God who is doing kindness:
Exodus 33:19
and He saith, 'I cause all My goodness to pass before thy face, and have called concerning the Name of Jehovah before thee, and favoured him whom I favour, and loved him whom I love.'
Exodus 34:6
and Jehovah passeth over before his face, and calleth: 'Jehovah, Jehovah God, merciful and gracious, slow to anger, and abundant in kindness and truth,
Isaiah 27:11
In the withering of its branch it is broken off, Women are coming in setting it on fire, For it is not a people of understanding, Therefore pity it not doth its Maker, And its Former doth not favour it.
Micah 7:18
Who is a God like Thee? taking away iniquity, And passing by the transgression of the remnant of His inheritance, He hath not retained for ever His anger, Because He -- He delighteth in kindness.