Hebrews 12:18-21 NIV

[18] You have not come to a mountain that can be touched and that is burning with fire; to darkness, gloom and storm; [19] to a trumpet blast or to such a voice speaking words that those who heard it begged that no further word be spoken to them, [20] because they could not bear what was commanded: “If even an animal touches the mountain, it must be stoned to death.” [21] The sight was so terrifying that Moses said, “I am trembling with fear.”