The the Book of Deuteronomy is not merely a legal corpus or a historical retrospective, but a profound theological manifesto that shaped Israel’s identity in relation to God, worship, and community. In an age where fragmented religious identities, competing ideologies, and pluralistic claims often obscure theological coherence, Deuteronomy offers a strikingly cohesive vision of faith, worship, and belonging. It is this triadic theological vision, “One God, One Cult, and One People,” that forms the foundation of the present work. The theological affirmations of Deuteronomy continue to challenge contemporary understandings of faith, worship, and community.