Muchforgiven,
Although Pilgrim did a thorough job in describing the work of the Holy Spirit I will offer this analogy that I heard recently that helped me understand this work.
There was a hydroelectric dam scheduled to be built on a river above a cluster of homes that had been in this valley for for several generations.The people that lived in the valley had drawn life from the river in many ways including everything from bathing to food.
After the dam was complete they still had all the benefits they had before and in addition they had electricity which greatly improved their lives and flood control which brought a measure of safety they had never experienced.
The Holy Spirit's ministry was just expanded after Pentecost.

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