And it came to pass on the third day in the morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of the trumpet exceeding loud; so that all the people that was in the camp trembled.
Psalms 77:18The voice of thy thunder was in the heaven: the lightnings lightened the world: the earth trembled and shook.
Hebrews 12:18For ye are not come unto the mount that might be touched, and that burned with fire, nor unto blackness, and darkness, and tempest,
Hebrews 12:19And the sound of a trumpet, and the voice of words; which voice they that heard intreated that the word should not be spoken to them any more: