Exodus 9:14, 29

for at this time I will send all My plagues to your very heart, and on your servants and on your people, that you may know that there is none like Me in all the earth.

So Moses said to him, “As soon as I have gone out of the city, I will spread out my hands to the LORD; the thunder will cease, and there will be no more hail, that you may know that the earth is the LORD’s.