Summary: This is a sermon about the Holy Spirit, who He is, and what He is doing, from the OT until today.
Sermon/Bible study about the Holy Spirit.
The Holy Spirit is present thru out the whole Bible. From Genesis 1 (quickview)  to Revelation. Genesis 1:2 (quickview)  says “darkness was over the surface of the deep, and the Spirit of God was hovering over the waters.”
It is evident that the Holy Spirit is present through out the whole Bible, but his function is a bit different in the Old Testament and in the New Testament.
The Holy Spirits function in the Old Testament.
In the Old Testament the Holy Spirit dwells upon certain people in certain times.
The presence of the Spirit were rare and limited.
The great prophet Moses, and received the holy Spirit from God as a Helper in his giant mission to lead the people of God out of Egypt. And when Moses felt that this burden fell too hard on his shoulders, God let the Spirit also come upon 70 other men. They too got the power to be leaders of the people.
Later in the story, in Deuteronomy 34 (quickview) , shortly before the death of Moses, he put his hands on a younger man, but with our perspective a rather old man. Joshua must have been at least 60 years old. When Moses prayed for Joshua He too received the Holy Spirit. The Spirit gave Joshua wisdom to be a good leader for the people after the death of Moses.
If we proceed to the first book of Samuel we will notice that the Holy Spirit is associated with the kings, Saul and David. When Saul in 1 Samuel 10 (quickview)  is anointed king of Israel, the Spirit of God falls upon him and changed his heart and mind and he would himself prophecy when he met God’s prophets.
In the Old Testament, the Holy Spirit came upon certain people at certain times. A humble attitude and obedience to God is closely associated with the Holy Spirit. That is why King David pray like he does in the well known psalm nr, 51, vv 8-13.
David had committed adultery and slept with Batsheba, someone elses wife. Afterwards he tried to cover it up by having Batsheba’s husband killed in the war.
The Prophet Natan had confronted David with his sin, and it is when he repent from his wrongdoings, he pray with the words of psalm 51 (quickview) . He ask God to let him keep the holy Spirit he received when he was anointed King of Israel.
2. Where the Holy Spirit is, remarkable things happen.
In the book of Judges we can read the fascinating story about Simpson and his enormous strength. It was a supernatural strength given to him by the Holy Spirit. He needed that strength to fulfil his mission for the Lord.
In 1:st Kings 18:45-46 we can read about how the old prophet Elijah is filled with the Holy Spirit. When that happened he got the ability to run in front of King Ahab’s carriage on his way back from the battle with the prophets of Baal.