Exodus 34:10

10 And he said, "Behold, I make a covenant. Before all your people I will do marvels, such as have not been wrought in all the earth or in any nation; and all the people among whom you are shall see the work of the LORD; for it is a terrible thing that I will do with you.

Exodus 34:10 In-Context

8 And Moses made haste to bow his head toward the earth, and worshiped.
9 And he said, "If now I have found favor in thy sight, O Lord, let the Lord, I pray thee, go in the midst of us, although it is a stiff-necked people; and pardon our iniquity and our sin, and take us for thy inheritance."
10 And he said, "Behold, I make a covenant. Before all your people I will do marvels, such as have not been wrought in all the earth or in any nation; and all the people among whom you are shall see the work of the LORD; for it is a terrible thing that I will do with you.
11 "Observe what I command you this day. Behold, I will drive out before you the Amorites, the Canaanites, the Hittites, the Per'izzites, the Hivites, and the Jeb'usites.
12 Take heed to yourself, lest you make a covenant with the inhabitants of the land whither you go, lest it become a snare in the midst of you.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.