Romans 9:17

For the scripture says to Pharaoh, "I have raised you up for this very purpose, that I may show my power in you, and that my name may be proclaimed in all the earth."

Romans 9:22-23

What if God, choosing to show his wrath and to make his power known, endured with much patience the vessels of wrath prepared for destruction,

Romans 11:8

as it is written: "God gave them a spirit of stupor, eyes that they should not see and ears that they should not hear, down to this very day."

Revelation 19:1-6

After this I heard what sounded like the loud voice of a great multitude in heaven, crying, "Hallelujah! Salvation and glory and power belong to our God,

Treasury of Scripture Knowledge

Summary

And I will harden Pharaoh's heart, that he shall follow after them; and I will be honoured upon Pharaoh, and upon all his host; that the Egyptians may know that I am the LORD. And they did so.

Harden

Bible References

Harden

Romans 11:8
as it is written: "God gave them a spirit of stupor, eyes that they should not see and ears that they should not hear, down to this very day."