When we pray from the Agpeya we read in Psalm 50, "Do not cast me away from your presence and do not remove your Holy Spirit from me."
I know that the first mention of the Holy Spirit in the Old Testament is in Genesis 1:2, "And the Spirit of God was hovering over the face of the waters." But where in the Old Testament do we see the Holy Spirit mentioned in the way that we know Him today (i.e, where is the first mention of someone receiving the Holy Spirit)? When did David receive the Holy Spirit?
Also, how was the Spirit viewed in the Old Testament, since it had not yet been revealed to us that the Father, the Son, and the Holy Spirit exist in one Godhead? What did the Jews believe concerning Him?