Exodus 9:34

Yet Pharaoh’s heart was hardened with strength, and he did not listen to them, as Yahweh had spoken.

“Why then do you harden your hearts as the Egyptians and Pharaoh hardened their hearts? When He had abused them, did they not allow the people to go, and they went?

“Then You performed signs and wonders against Pharaoh, Against all his servants and all the people of his land; For You knew that they acted presumptuously toward them, And made a name for Yourself as it is this day.

And the first sounded, and there came hail and fire, mixed with blood, and they were thrown to the earth; and a third of the earth was burned up, and a third of the trees were burned up, and all the green grass was burned up.