Exodus 9:14-16

For this time I will send all my plagues on you yourself, and on your servants and your people, so that you may know that there is none like me in all the earth. For by now I could have put out my hand and struck you and your people with pestilence, and you would have been cut off from the earth. But for this purpose I have raised you up, to show you my power, so that my name may be proclaimed in all the earth.