“On the morning of the third day there was thunder and lightning, as well as a thick cloud on the mountain, and a blast of a trumpet so loud that all the people who were in the camp trembled (Exodus 19:16)…As the blast of the trumpet grew louder and louder, Moses would speak and God would answer him in thunder. (Exodus 19:19)”
“And I heard a voice from heaven like the sound of many waters and like the sound of loud thunder; the voice I heard was like the sound of harpists playing on their harps, and they sing a new song before the throne and before the four living creatures and before the elders. No one could learn that song except the one hundred forty-four thousand who have been redeemed from the earth.” (Revelation 14:2-3)