Exodus 19:17

וַיֹּאמֶר אֶל־הָעָם הֱיוּ נְכֹנִים לִשְׁלֹשֶׁת יָמִים אַֽל־תִּגְּשׁוּ אֶל־אִשָּֽׁה

And he said unto the people: ‘Be ready against the third day; come not near a woman.’

וַיְהִי בַיּוֹם הַשְּׁלִישִׁי בִּֽהְיֹת הַבֹּקֶר וַיְהִי קֹלֹת וּבְרָקִים וְעָנָן כָּבֵד עַל־הָהָר וְקֹל שֹׁפָר חָזָק מְאֹד וַיֶּחֱרַד כָּל־הָעָם אֲשֶׁר בַּֽמַּחֲנֶֽה

And it came to pass on the third day, when it was morning, that there were thunders and lightnings and a thick cloud upon the mount, and the voice of a horn exceeding loud; and all the people that were in the camp trembled.

וְהַר סִינַי עָשַׁן כֻּלּוֹ מִפְּנֵי אֲשֶׁר יָרַד עָלָיו יְהוָה בָּאֵשׁ וַיַּעַל עֲשָׁנוֹ כְּעֶשֶׁן הַכִּבְשָׁן וַיֶּחֱרַד כָּל־הָהָר מְאֹֽד

Now mount Sinai was altogether on smoke, because the LORD descended upon it in fire; and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked greatly.

וַיְהִי קוֹל הַשּׁוֹפָר הוֹלֵךְ וְחָזֵק מְאֹד מֹשֶׁה יְדַבֵּר וְהָאֱלֹהִים יַעֲנֶנּוּ בְקֽוֹל

And when the voice of the horn waxed louder and louder, Moses spoke, and God answered him by a voice.