Who is Holy Spirit from The Kingdom of the Cults and what is their importance?

The Holy Spirit is part of the Christian Trinity. He enters the hearts of believers and enables them to live lives pleasing to God. The Bible reminds us believers are the temple of the Holy Spirit. The Spirit of God dwells within each Christian. The Jehovah's Witnesses deny the Holy Spirit's personality and deity. According to the author, the Spiritists are members of a cult that relies on the power of demonic forces, not the Holy Spirit.