This article asks how Philip Sheldrake’s account of spirituality can clarify a spiritually grounded model of Basic Ecclesial Community (BEC) formation and social engagement in Indonesia. It argues that his contextual, embodied, historical, and relational approach offers a theological-pastoral framework for connecting personal renewal with communal life and public responsibility, without assuming that devotional practice automatically produces justice. The study is qualitative library research, using purposively selected theological writings, scholarship on BECs and small Christian communities, Indonesian pastoral publications, and official Church documents. A thematic synthesis identifies five interrelated themes informing dimensions of transformative BEC formation: shared spiritual formation, communal solidarity, social responsibility, participatory leadership, and ecclesial embedding. The article organizes Sheldrake’s broader work through three analytical dimensions—self-transformation, relational transformation, and world-transformation—which are the authors’ synthesis rather than a typology explicitly formulated by Sheldrake. The themes are operationally related through a cyclical pastoral process of contemplation, discernment, action, evaluation, and renewed contemplation. The model is conceptual, conditional, and open to empirical examination; it neither establishes causality nor claims programme effectiveness. Its contribution is a contextual theological-pastoral synthesis attentive to Indonesia’s cultural and religious plurality, regional diversity, unequal resources, and parish structures. Comparative field research is needed to examine how participation, leadership, reflection–action cycles, social initiatives, and accountability operate in diverse Indonesian BECs.