The Spiritual Hierarchies described by Rudolf Steiner, and many others, are nine ranks of beings who work together as one being with three part, — the first, second, and third hierarchy. The Holy Trinity works through the “threefold” set of hierarchical beings as the Father God rules the first/highest rank of the hierarchy – Seraphim, Cherubim, and Thrones; the Son God of the Holy Trinity (Christ) works through the second, middle rank of the hierarchy – Dominions/Spirits of Wisdom, the Mights/Spirits of Movement, and the Powers/Spirits of Form; and the Holy Spirit works through the third/lowest rank of the hierarchy – Angels, Archangels, and Archai.
This inherent “trinity in a trinity” does not make the Christian Holy Trinity and Celestial Hierarchy a form of pantheism or deity worship because a “threefold” Divine being manifests Itself through a “threefold” set of hierarchical aspects, virtues, qualities, forces, beings, and levels of consciousness congealing over four ancient periods of development of the Earth to create a human being on the Earth today.