“And when the day of Pentecost was fully come, they were all with one accord in one place.” Acts 2:1 The Christian holiday of Pentecost, which is celebrated the 49th day after Easter Sunday, commemorates the descent of the Holy Spirit upon the Apostles and other followers of Jesus Christ while they were in Jerusalem celebrating the Feast of Weeks, as described in the Acts of the Apostles. Wikipedia When Jesus told His disciples to tarry in Jerusalem until they would receive the promise of the Holy Spirit, they had no idea how long it would take. And they were…