Exodus 19:19
And when the voice of the trumpet sounded long, and grew louder and louder, Moses spoke, and God answered him by a voice.
Psalm 81:7
Thou calledst in trouble, and I delivered thee; I answered thee in the secret place of thunder: I proved thee at the waters of Meribah. Selah.
Exodus 19:16
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 were in the camp trembled.
Exodus 19:13
There shall not a hand touch it, but he shall surely be stoned or shot through: whether it be beast or man, it shall not live: when the trumpet soundeth long, they shall come up to the mount.
Nehemiah 9:13
Thou camest down also upon mount Sinai, and spokest with them from heaven, and gavest them right judgments, and true laws, good statutes and commandments:
Hebrews 12:21
And so terrible was the sight, that Moses said, I exceedingly fear and tremble:)