Isaiah talks about the Holy Spirit and gives Him names in his saying: “The Spirit of the LORD…The Spirit of wisdom and understanding, The Spirit of counsel and might, The Spirit of knowledge and of the fear of the LORD.” (Is 11:2).
And we add to that in the third Hour Prayer (Terce) of every day and say: “a spirit of prophecy and chastity, a spirit of holiness, justice and authority” and call Him by saying: “O Heavenly King, the Comforter, the Spirit of truth, who is present in all places and fills all, the treasury of good things and the Life-Giver”.