And it came to pass, that at midnight the LORD smote all the firstborn in the land of Egypt, from the firstborn of Pharaoh that sat on his throne unto the firstborn of the captive that was in the dungeon, and all the firstborn of the animals.

I will smite them with the pestilence and disinherit them and will make of thee a greater nation and mightier than they.

And Moses said unto Aaron, Take the censer and put fire in it from off the altar and put incense upon it and go quickly unto the congregation and reconcile them; for the wrath has gone out from before the face of the LORD; the plague is begun.

He made a way to his anger; he did not spare their soul from death but gave their life over to the pestilence

God is jealous, and the LORD avenges; the LORD avenges and is furious; the LORD will take vengeance on his adversaries, and he reserves wrath for his enemies.

And

Then the earth shook and trembled; the foundations of the mountains collapsed and were removed because he was wroth.

Burning coals

They shall be consumed with hunger and devoured with burning heat and with bitter destruction; I will also send the teeth of beasts upon them, with the poison of serpents of the dust.

General references

He holds back the face of his throne and spreads his cloud upon it.

His breath kindles coals, and a flame goes out of his mouth.

A fire shall go before him and burn up his enemies round about.