Christian education plays a vital role in shaping faith, values, and witness within the church, yet it faces growing challenges in pluralistic and urban contexts. Batam, Indonesia—a rapidly developing city marked by religious diversity and cultural hybridity—provides a unique setting for exploring how Christian Religious Education (CRE) engages with pluralism while remaining faithful to the Gospel. This study investigates the theological foundations of Christian education in Batam, focusing on how biblical principles, pedagogical strategies, and contextual realities intersect in schools and churches. Using a qualitative descriptive design, data were collected from three Christian schools through interviews with teachers, administrators, and students, as well as classroom observations and document analysis. Findings reveal that Christian education in Batam is consistently grounded in the authority of Scripture, the centrality of Christ, and the empowering work of the Holy Spirit. These theological foundations guide educators in fostering a resilient Christian identity that affirms faith particularity while cultivating respect, empathy, and dialogue with religious others. The pluralistic environment, rather than threatening Christian education, provides opportunities for intercultural learning, interfaith understanding, and contextual theological reflection. Educators employ dialogical pedagogies and contextual approaches that integrate urban theology, enabling students to connect faith with everyday realities such as migration, inequality, and coexistence. While challenges remain—particularly regarding secularism, consumerism, and sensitive interfaith dynamics—the Batam experience demonstrates that pluralism can enrich Christian education when engaged theologically. This study contributes to broader discussions on religious education in pluralistic societies, highlighting the transformative potential of Christian education to embody reconciliation, justice, and hope in complex urban contexts.