The Feast of Pentecost: The Law Given from Mount Sinai Upon
Source: TTT
Exodus 12:6, 12
You must keep it until the fourteenth day of the month, when the whole assembly of the congregation of Israel will slaughter the animals at twilight. / On that night I will pass through the land of Egypt and strike down every firstborn male, both man and beast, and I will execute judgment against all the gods of Egypt. I am the LORD.
Exodus 19:1, 11
In the third month, on the same day of the month that the Israelites had left the land of Egypt, they came to the Wilderness of Sinai. / and be prepared by the third day, for on the third day the LORD will come down on Mount Sinai in the sight of all the people.