The Holy Spirit is referred to as the third person of the Trinity, which consists of God the Father, God the Son (Jesus), and God the Holy Spirit. The Holy Spirit is also known as the Paraclete, which means "helper" or "advocate" in Greek, emphasizing the role of the Holy Spirit in guiding and supporting believers. Additionally, the Holy Spirit is described as the Spirit of Truth, highlighting the Holy Spirit's role in revealing and guiding believers into all truth. Therefore, all of the given options accurately describe the Holy Spirit.