Exodus 34:10

In Exodus 34 of Exodus.

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.

The King James Version (1769) is in the public domain in the United States.