Romans 9:17

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

Romans 9:22-23

But if God, wishing to show forth his indignation and make his power known, endured with much longsuffering the vessels of indignation having been perfected unto destruction:

Romans 11:8

as has been written, God has given them the spirit of slumber, eyes that they should not see, and ears that they should not hear, unto this day.

Revelation 19:1-6

After these things I heard as it were a great voice of a vast multitude in the heaven, saying, Hallelujah! Salvation, and glary, 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 has been written, God has given them the spirit of slumber, eyes that they should not see, and ears that they should not hear, unto this day.