The word comes from the Greek which means fifty. So, Pentecost was a celebration on the fiftieth day after Passover. It was a culmination of the feast of weeks (Ex. 34:22>, 23>). Pentecost in the N.T. is the arrival of the Holy Spirit for the church (Acts 2>). At Pentecost the disciples of Jesus were gathered and upon the filling of the Holy Spirit, they heard a great wind and spoke in tongues as tongues of fire that settled upon them. The significance of the fire can be found in recognizing it as a symbol of the dwelling of the Spirit of God (Ex. 19:18>; 1 Pet. 4:14>).