Romans 9:18

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

Exodus 4:21

And Jehovah saith unto Moses, 'In thy going to turn back to Egypt, see -- all the wonders which I have put in thy hand -- that thou hast done them before Pharaoh, and I -- I strengthen his heart, and he doth not send the people away;

Deuteronomy 2:30

'And Sihon king of Heshbon hath not been willing to let us pass over by him, for Jehovah thy God hath hardened his spirit, and strengthened his heart, so as to give him into thy hand as at this day.

Joshua 11:20

for from Jehovah it hath been to strengthen their heart, to meet in battle with Israel, in order to devote them, so that they have no grace, but in order to destroy them, as Jehovah commanded Moses.

Exodus 7:13

and the heart of Pharaoh is strong, and he hath not hearkened unto them, as Jehovah hath spoken.

Isaiah 63:17

Why causest Thou us to wander, O Jehovah, from Thy ways? Thou hardenest our heart from Thy fear, Turn back for Thy servants' sake, The tribes of Thine inheritance.

Matthew 13:14-15

and fulfilled on them is the prophecy of Isaiah, that saith, With hearing ye shall hear, and ye shall not understand, and seeing ye shall see, and ye shall not perceive,

Acts 28:26-28

saying, Go on unto this people and say, With hearing ye shall hear, and ye shall not understand, and seeing ye shall see, and ye shall not perceive,

Romans 1:24-28

Wherefore also God did give them up, in the desires of their hearts, to uncleanness, to dishonour their bodies among themselves;

Romans 5:20-21

And law came in, that the offence might abound, and where the sin did abound, the grace did overabound,

Romans 9:15-16

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

Romans 11:7-8

What then? What Israel doth seek after, this it did not obtain, and the chosen did obtain, and the rest were hardened,

Ephesians 1:6

to the praise of the glory of His grace, in which He did make us accepted in the beloved,

2 Thessalonians 2:10-12

and in all deceitfulness of the unrighteousness in those perishing, because the love of the truth they did not receive for their being saved,

Treasury of Scripture Knowledge

Summary

Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth.

General references

Bible References

Hath

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;'
Romans 5:20
And law came in, that the offence might abound, and where the sin did abound, the grace did overabound,
Ephesians 1:6
to the praise of the glory of His grace, in which He did make us accepted in the beloved,

Will he

Romans 1:24
Wherefore also God did give them up, in the desires of their hearts, to uncleanness, to dishonour their bodies among themselves;
Romans 11:7
What then? What Israel doth seek after, this it did not obtain, and the chosen did obtain, and the rest were hardened,
Exodus 4:21
And Jehovah saith unto Moses, 'In thy going to turn back to Egypt, see -- all the wonders which I have put in thy hand -- that thou hast done them before Pharaoh, and I -- I strengthen his heart, and he doth not send the people away;
Exodus 7:13
and the heart of Pharaoh is strong, and he hath not hearkened unto them, as Jehovah hath spoken.
Deuteronomy 2:30
'And Sihon king of Heshbon hath not been willing to let us pass over by him, for Jehovah thy God hath hardened his spirit, and strengthened his heart, so as to give him into thy hand as at this day.
Joshua 11:20
for from Jehovah it hath been to strengthen their heart, to meet in battle with Israel, in order to devote them, so that they have no grace, but in order to destroy them, as Jehovah commanded Moses.
Isaiah 63:17
Why causest Thou us to wander, O Jehovah, from Thy ways? Thou hardenest our heart from Thy fear, Turn back for Thy servants' sake, The tribes of Thine inheritance.
Matthew 13:14
and fulfilled on them is the prophecy of Isaiah, that saith, With hearing ye shall hear, and ye shall not understand, and seeing ye shall see, and ye shall not perceive,
Acts 28:26
saying, Go on unto this people and say, With hearing ye shall hear, and ye shall not understand, and seeing ye shall see, and ye shall not perceive,
2 Thessalonians 2:10
and in all deceitfulness of the unrighteousness in those perishing, because the love of the truth they did not receive for their being saved,

General references

Exodus 10:20
and Jehovah strengtheneth the heart of Pharaoh, and he hath not sent the sons of Israel away.