DID YOU KNOW? The Meaning of Pentecost

We in the Christian church think of "Pentecost" as being a purely Christian holiday, because that was the day the Holy Spirit was given to the disciples. But how can that be the case when in Acts itself, the day is identified BEFORE the Holy Spirit is given?

When the day of Pentecost came, they were all together in one place.
Acts 2:1

Pentecost really means "fiftieth day" and is the countoff of 50 days after the Passover. Traditionally, this is believed in the Jewish calendar to be the day that Moses gave the 10 Commendaments at Sinai. It is also the start of the Hebrew celebration of the "Feast of Harvest."

So, Pentecost marks the beginning of a new "giving from God" comparable to the 10 Commandments, and a new Harvest from Jesus. (Sources: Wikipedia and the Catholic Encyclopedia)