Exodus 9:14-17

For this time I will send all My plagues on you and your servants and your people, so that you may know that there is no one like Me in all the earth. For if by now I had put forth My hand and struck you and your people with pestilence, you would then have been cut off from the earth. But, indeed, for this reason I have allowed you to remain, in order to show you My power and in order to proclaim My name through all the earth. Still you exalt yourself against My people by not letting them go.