Exodus 34:8-10

Moses bowed to the earth immediately and worshiped [the Lord]. And he said, “If now I have found favor and lovingkindness in Your sight, O Lord, let the Lord, please, go in our midst, though it is a stiff-necked (stubborn, rebellious) people, and pardon our iniquity and our sin, and take us as Your possession.” Then God said, “Behold, I am going to make a covenant. Before all your people I will do wondrous works (miracles) such as have not been created or produced in all the earth nor among any of the nations; and all the people among whom you live shall see the working of the LORD, for it is a fearful and awesome thing that I am going to do with you.