Deuteronomy 4:10-13

10Never forget the day when you stood before the Lord your God at Mount Sinai, where he told me, ‘Summon the people before me, and I will personally instruct them. Then they will learn to fear me as long as they live, and they will teach their children to fear me also.’

11“You came near and stood at the foot of the mountain, while flames from the mountain shot into the sky. The mountain was shrouded in black clouds and deep darkness.

12And the Lord spoke to you from the heart of the fire. You heard the sound of his words but didn’t see his form; there was only a voice.

13He proclaimed his covenant—the Ten Commandments—which he commanded you to keep, and which he wrote on two stone tablets.