Hebrews 12:18-19

18You have come near to God. But you have not come to a place that you can touch, like Sinai mountain. That mountain burned with fire. But where the people stood, it was completely dark. They could not see at all. There was also a very strong wind and a storm.

19There was the loud sound of a trumpet. There was a powerful voice that spoke to them. When the people heard that voice, they were very afraid. So they asked that the voice would not speak to them any more.