This would be the Holy Spirit.

Due to the word Trinity not being in the Bible which wasnt compiled till 300 AD we rely on the Dogmatic Teachings of the Roman Catholic Church.

No where in scripture are their instructions from Jesus or anyone else that the Holy Ghost or Holy Spirit is to be worshiped as God. No where does it say that the spirit is the third person of the Trinty. This truth was given to the Catholic Church through the Nicacean Creed in 325 AD.