Deuteronomy 4:11
You came near and stood under the mountain. The mountain burned with fire to the heart of the sky, with darkness, cloud, and thick darkness.
World English Bible (Public Domain)
In context
Before · Deuteronomy 4:9–10
9Only be careful, and keep your soul diligently, lest you forget the things which your eyes saw, and lest they depart from your heart all the days of your life; but make them known to your children and your children’s children— 10the day that you stood before the LORD your God in Horeb, when the LORD said to me, “Assemble the people to me, and I will make them hear my words, that they may learn to fear me all the days that they live on the earth, and that they may teach their children.”
11You came near and stood under the mountain. The mountain burned with fire to the heart of the sky, with darkness, cloud, and thick darkness.