Exodus 34:10
Exodus 34:10 AMP
Then God said, “Behold, I am going to make a covenant. Before all your people I will do wondrous works (miracles) such as have not been created or produced in all the earth nor among any of the nations; and all the people among whom you live shall see the working of the LORD, for it is a fearful and awesome thing that I am going to do with you.