Exodus 19:16

16On the morning of the athird day there were bthunders and lightnings and ca thick cloud on the mountain and a very loud dtrumpet blast, so that all the people in the camp etrembled.

Deuteronomy 5:22

22These words the Lord spoke to all your assembly fat the mountain out of the midst of the fire, the cloud, and the thick darkness, with a loud voice; and he added no more. And ghe wrote them on two tablets of stone and gave them to me.
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