Exodus 10:6

10:6 They will fill your houses, the houses of your servants, and all the houses of Egypt, such as neither your fathers nor your grandfathers have seen since they have been in the land until this day!’” Then Moses turned and went out from Pharaoh.

Exodus 34:10

34:10 He said, “See, I am going to make a covenant before all your people. I will do wonders such as have not been done in all the earth, nor in any nation. All the people among whom you live will see the work of the Lord, for it is a fearful thing that I am doing with you.