Why do we pray "Come, Holy Spirit"?

Come Holy Spirit is a prayer the church of Jesus Christ has been praying in many forms over many centuries. You will hear this simple prayer, in some form, being prayed in virtually every Vineyard church around the world - but how can we pray ‘Come, Holy Spirit’ when we already have the Holy Spirit? In this talk Nick explains that it is only with and through the power of the Holy Spirit that we can do the work Jesus has given us to do. Only through the Holy Spirit can we join him in building  the Kingdom of God to the ends of the earth.