In the chodesh hashelishi (third new moon), after the Bnei Yisroel had their exodus from Eretz Mitzrayim, on that very day they came into the Midbar Sinai.
For they were departed from Rephidim, and were come to Midbar Sinai, and had encamped in the midbar; and there Yisroel camped before HaHar.
And Moshe went up to HaElohim, and Hashem called out unto him from HaHar, saying, Thus shalt thou say to the Bais Ya'akov, and declare unto the Bnei Yisroel;
You yourselves have seen what I did unto the Mitzrayim, and how I carried you on eagles' wings, and brought you unto Myself.
Now therefore, if ye will obey My voice very carefully, and be shomer over My brit, then ye shall be a segullah (treasured possession) unto Me above all people; for kol ha'aretz is Mine;
And ye shall be unto Me a mamlechet kohanim, and a goy kadosh. These are the words which thou shalt recount unto the Bnei Yisroel.
And Moshe came and summoned the Ziknei HaAm, and set authoritatively before their faces all these words just as Hashem commanded him.
And kol HaAm answered together, and said, All that Hashem hath spoken we will do. And Moshe brought back the words of HaAm unto Hashem.
And Hashem said unto Moshe, Hinei, I am coming unto thee in a thick cloud, that HaAm may hear when I speak with thee, and believe thee l'olam. Then Moshe told the words of HaAm unto Hashem.
So Hashem said unto Moshe, Go unto HaAm, and set them apart as kodesh today and tomorrow, and let them wash their clothing,
And be ready by Yom HaShelishi; for Yom HaShelishi Hashem will come down in the sight of kol HaAm upon Mt. Sinai.
And thou shalt set boundaries unto HaAm all around, saying, Take heed to yourselves, that ye go not up into HaHar, or touch the edge of it; whosoever toucheth HaHar shall be surely put to death;
There shall no yad touch him, but he shall surely be stoned, or surely mortally shot; whether it be behemah or ish, it shall not live; when the yovel soundeth long, they shall come up to HaHar.
So Moshe came down from HaHar unto HaAm, and set apart as kodesh HaAm; and they washed their clothes.
Then he said to HaAm, Be ready by Sheloshet Yamim; come not into your isha.
And it came to pass on the Yom HaShelishi when the boker was breaking, that there were thunderings and lightnings, and a heavy cloud upon HaHar, and the blast of the shofar exceeding loud; so that kol HaAm that was in the machaneh trembled with terror.
And Moshe led HaAm forth out of the machaneh to encounter HaElohim; and they stood at the foot of HaHar.
And Mt. Sinai was altogether smoking, because Hashem descended upon it in eish; and the smoke thereof ascended as the smoke of the furnace, and kol HaHar shook violently.
And when the sound of the shofar was moving [closer], and grew louder and louder, Moshe spoke, and HaElohim answered him in thunder.
And Hashem came down upon Mt. Sinai, onto the top of HaHar; and Hashem summoned Moshe up to the top of HaHar; and Moshe went up.
And Hashem said unto Moshe, Go down, warn HaAm, lest they push through toward Hashem to gaze, and many of them fall perishing.
And let the kohanim also, which come near to Hashem, set themselves apart as kodesh, lest Hashem break forth upon them.
And Moshe said unto Hashem, HaAm cannot come up to Mt. Sinai; for You Yourself charged us, saying, Establish boundaries for HaHar, and set it apart as kodesh.
And Hashem said unto him, Away, get thee down, and thou shalt come up, thou, and Aharon with thee; but let not the kohanim and HaAm push through to come up unto Hashem, lest He break forth upon them.
So Moshe went down unto HaAm and told them.