Deuteronomy 4:10-15

10Remember the day you stood before the Lord your God at Horeb, when he said to me, “Assemble the people before me to hear my words so that they may learn to revere me as long as they live in the land and may teach them to their children.” 11You came near and stood at the foot of the mountain while it blazed with fire to the very heavens, with black clouds and deep darkness. 12Then the Lord spoke to you out of the fire. You heard the sound of words but saw no form; there was only a voice. 13He declared to you his covenant, the Ten Commandments, which he commanded you to follow and then wrote them on two stone tablets. 14And the Lord directed me at that time to teach you the decrees and laws you are to follow in the land that you are crossing the Jordan to possess. 15You saw no form of any kind the day the Lord spoke to you at Horeb out of the fire. Therefore watch yourselves very carefully,