John Wesley on Exodus 34:10

Behold I make a covenant - When the covenant was broke, it was Israel that broke it; now it comes to be renewed, it is God that makes it. If there be quarrels, we must bear all the blame; if there be peace, God must have all the glory. Before all thy people I will do marvels - Such as the drying up of Jordan, the standing still of the sun. Marvels indeed, for they were without precedent, such as have not been done in all the earth; the people shall see, and own the work of the Lord; and they were the terror of their enemies: it is a terrible thing that I will do.