The descriptions of spirit from the Tanak are not uniform. One could assume that it was the Holy Spirit that was present at Pentecost, but there are other descriptions. From the prophetic context of Zechariah 13 there is an unclean spirit, which relates to the three unclean spirits of Revelation 16:13.oh ok...hope we are making progress as this is foundational to Christendom
The issue remains unresolved as the East has the progression of the Spirit from the Father alone and the Romans have it from both the Father and the Son
The fire of Pentecost associates numerically with the gematria for the Hebrew name of the Spirit of Elohim, i.e. ruach elohim = 300 = fire.
And I will bring the third part through the fire, and will refine them as silver is refined, and will try them as gold is tried
Zechariah 13:9