Exodus 3:19-20

3:19 But I know that the king of Egypt will not let you go, not even under force. 3:20 So I will extend my hand and strike Egypt with all my wonders that I will do among them, and after that he will release you.

Deuteronomy 4:34

4:34 Or has God ever before tried to deliver a nation from the middle of another nation, accompanied by judgments, signs, wonders, war, strength, power, and other very terrifying things like the Lord your God did for you in Egypt before your very eyes?