 This weekend marks one of the most important occasions in the history of the Christian church. It's the day of Pentecost. And it's actually, and probably you may not know this, it's a lot older than the church. Christians call the day Pentecost if they take note of it at all. Considering what happened on that day, I am surprised that there are so many Christians who know so little about the day, and I expect an awful lot of them come up to this weekend with no idea that this is Pentecost weekend.