This article aims to explore the concept of ecclesiology of the Calvinist-based Protestant Church of Maluku, which fused into Pancasilaism with a contextual approach. This is based on the identity of Maluku and the awareness of being Indonesian ingrained in the life of the Maluku Protestant Church, and this becomes very anomalous if the characteristics and dynamics of life of the unit of observation that are later discovered and displayed are actually westernized. The results of this article are first, to encourage writing down that imagination, which is still in the form of tacit knowledge, as explicit knowledge in books; second, to make theological beliefs the basis for developing imagination; third, to sew sociological facts together with theological premises in one narrative..