Hebrews 12:18-21

For ye are not come unto a mount that might be touched, and that burned with fire, and unto blackness, and darkness, and tempest, and the sound of a trumpet, and the voice of words; which voice they that heard entreated that no word more should be spoken unto them; for they could not endure that which was enjoined, If even a beast touch the mountain, it shall be stoned; and so fearful was the appearance, that Moses said, I exceedingly fear and quake