This Section of the Didactics undertakes an in-depth exploration of the doctrines of God The Spirit and God The Father, providing a nuanced articulation of their subsistences and roles within the Trinity. The author conceptualizes God The Father as the Transcendent God proper, embodying the divine essence in its transcendent aspect, while God The Spirit is posited as the Immanent God proper, mediating the presence of the whole Trinity in the lives of believers and the world at large. Through what the author often denominates as neo-Reformed accounts, the author presents a multifaceted exploration of the Father and the Spirit, synthesizing various strands of thought to construct a cohesive neo-Reformed theology. Notably, the author diverges from an absolute monotheistic understanding of God, which fixates on the oneness of God, instead advocating for what he often calls Trinitarian Monotheism, which paradoxically affirms the coexistence of Three Gods in One God and One God in Three Gods. In alignment with theologians such as Robert Smith Jr. and Francis Chan, the book also critiques the prevalent neglect of God The Holy Spirit, thereby the neglect of the Trinity in Christian doctrine and praxis, underscoring the significance of a robust Trinitarian theology for Christian doctrine and praxis. Furthermore, this Section seeks to rectify misconceptions about God The Father, often confounded with the image of ruthless earthly fathers, rather positing the meaning of Father as the ground, source, and sustenance of Being. Given the complexity and richness of this work, which spans over 212,000 words, the author invites you to engage with it directly to fully appreciate its depth and theological insights.