Exodus 34:10 in the King James Version
And he said, Behold, I make a covenant: before all thy people I will do marvels, such as have not been done in all the earth, nor in any nation: and all the people among which thou art shall see the work of the LORD: for it is a terrible thing that I will do with thee.
Context
9 He said, “If now I have found favor in your sight, Lord, please let the Lord go among us, even though this is a stiff-necked people; pardon our iniquity and our sin, and take us for your inheritance.”
10 He said, “Behold, I make a covenant: before all your people I will do marvels, such as have not been worked in all the earth, nor in any nation; and all the people among whom you are shall see the work of the LORD; for it is an awesome thing that I do with you.
11 Observe that which I command you today. Behold, I will drive out before you the Amorite, the Canaanite, the Hittite, the Perizzite, the Hivite, and the Jebusite.