Acts 2:1 And when the day of Pentecost was fully come, they were all with one accord in one place. [kjv]
και εν τω συμπληρουσθαι την ημεραν της πεντηκοστης ησαν παντες ομου επι το αυτο [gnt]
The word "
Pentecost" comes from the Greek and means "
fifty" as in
50. Fifty days from the discovery of the empty tomb. The word and idea, however, goes back before then.
"
Pentecost" is known in England as "
Whitsun" for "
White Sunday" and in Eastern Orthodox traditions as "
Trinity Sunday". In addition to Acts 2, Pentecost is mentioned by Paul in several places.
During this
Feast of Weeks time, it was customary to do a pilgrimage to Jerusalem. Thus, in Acts 2, there are men of many nationalities mentioned. They are probably "
pilgrims" (strangers from out of town) making a trip to Jerusalem.