Romans 9:17

For the Scripture saith to Pharaoh, "For this very purpose did I raise thee up, that I might show forth my power in thee, and that my name might be made known in all the earth."

Romans 9:22-23

What if God endured with much patience vessels of wrath fitted for destruction, purposing to manifest his wrath and to make known his power;

Romans 11:8

as it is written: "God gave them a spirit of slumber, eyes that were not to see, and ears that were not to hear, unto this day."

Revelation 19:1-6

After these things I heard as it were a loud voice of a great multitude in heaven, saying, Hallelujah I The salvation, and the glory, and the 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 slumber, eyes that were not to see, and ears that were not to hear, unto this day."