Final answer:
The concept that the Holy Spirit is the office of the Heavenly Mother is not a mainstream Christian doctrine. Most Christian beliefs identify the Holy Spirit as the third person of the Trinity, who inspires and guides believers, but not as a Heavenly Mother. Therefore, the statement in question is false.
Step-by-step explanation:
The assertion that the Holy Spirit is the office of the Heavenly Mother and that she inspires and guides us through our mortal life experience is not a universally accepted belief within Christianity. Traditional Christian theology teaches that the Holy Spirit is the third person of the Holy Trinity, which includes God the Father, the Son (Jesus Christ), and the Holy Spirit. According to most Christian beliefs, the Holy Spirit is not identified as Heavenly Mother, but as God's spirit who inspires, guides, and empowers believers.
It is important to recognize the diversity of beliefs across different Christian denominations. However, the concept of the Holy Spirit as the Heavenly Mother is a belief held by specific religious groups and is not a mainstream Christian doctrine. In the context of the question presented, the statement is considered False in traditional Christian teaching.