In The Prophetic Imagination, Walter Brueggemann argues that prophetic discourse generates alternative futures capable of unsettling dominant narratives. Ignacio Ellacuría further insists that such imagination must be historically embodied and ethically accountable. Yet Christian history reveals an enduring ambiguity: the same ecclesial memory that once resisted imperial logic has also been mobilized to sanctify it. This paper proposes the category of future as anamnesis in order to rethink prophetic imagination ecclesiologically. Drawing from Byzantine conciliar and liturgical traditions, particularly the performative and identity-forming function of texts such as the Synodikon of Orthodoxy, the study argues that the Church does not invent its future ex nihilo; it ritually remembers it into being. Anamnesis, however, is never neutral. Liturgical and conciliar memory can function either as prophetic critique or as sacred ideology. Engaging contemporary Catholic reflection on synodality, the paper places Orthodox conciliar consciousness and Catholic synodal processes into constructive dialogue. While Catholic synodality emphasizes listening, participation, and communal discernment, Orthodox tradition highlights the liturgical embodiment of doctrinal consensus. Both face a common challenge: how to prevent synodal life from becoming bureaucratic management or ideological alignment. In a context marked by nationalism, technological governance, and ecclesial polarization, prophetic imagination requires a kenotic re-reading of tradition—one capable of resisting every form of sacred empire, including those sustained by religious language itself.