Akilathirattu Ammanai stands at the heart of Ayyavazhi as its primary and foundational scripture, revered as a divinely revealed text that shapes the faith’s theology, mythology, and practice. It presents a sweeping narrative of creation and the cycles of yugas, portraying the ongoing struggle between divine and anti‑divine forces and offering a cosmological framework through which existence, suffering, and ultimate destiny are understood. Within this vision, it speaks of the supreme reality and the incarnations of Narayana, culminating in the advent of Ayya Vaikundar in the present age. In doing so, it provides not merely a story of the universe but a lens through which devotees interpret their place in a morally charged cosmos.

At the center of the text lies the life and mission of Ayya Vaikundar, regarded as the final avatar of Narayana or Vishnu, whose incarnation is directed toward the destruction of Kali and the establishment of Dharma Yukam, an age of righteousness. The narrative of his deeds, teachings, and struggles functions as a divine biography that reveals his role in restoring dharma in the midst of the disorder of Kali Yuga. Through this, the scripture defines what it means to live in alignment with dharma in a time of spiritual and social confusion. The figure of Vaikundar thus becomes both a theological anchor and a living model of resistance to injustice and moral decay.

Ethically and socially, Akilathirattu Ammanai speaks with a reforming voice, emphasizing equality, unity, and justice as expressions of true dharma. It condemns caste oppression and other forms of social discrimination, interpreting them as manifestations of the disruptive power of Kali. By affirming the equal worth of all people before the divine, it inspires practices of shared worship and communal life that seek to dissolve rigid social boundaries. In this way, the text functions not only as a spiritual guide but also as a charter for a more just and harmonious human community.

Liturgically, the scripture permeates the devotional life of Ayyavazhi. It is recited and sung in the sacred centers of worship, shaping rituals, festivals, and the collective memory of the community. Through its verses, devotees encounter both doctrinal teaching and living tradition, as the stories and teachings are continually re‑enacted in communal worship. As a result, Akilathirattu Ammanai serves simultaneously as theological foundation, ethical compass, and spiritual songbook, giving Ayyavazhi its distinctive identity and its vision of a world ordered by dharma and unity.