The development of globalization and digitalization has significantly impacted the character formation of Christian adolescents, who often experience identity crises, anxiety, and weak spiritual resilience. This phenomenon indicates a gap between cognitively oriented faith instruction and the realities of everyday life, suggesting that character education has not yet fully produced authentic life transformation. This study aims to examine the integration of the theology of the Fruit of the Spirit and spiritual formation as the foundation for Christian character development among adolescents. The method used is qualitative with a theological literature review approach that is conceptual and analytical in nature. The findings show that the Fruit of the Spirit (Galatians 5:22–23) represents the manifestation of a life led by the Holy Spirit and serves as a holistic indicator of spiritual maturity, encompassing internal, relational, and theological dimensions. Furthermore, spiritual formation is understood as an ongoing transformative process that shapes Christlikeness through Scripture, spiritual disciplines, and the community of faith. The integration of both concepts results in a model of Christian character education that is theological, relational, and transformational, positioning discipleship, modeling, and community as its primary strategies. Thus, Christian character education cannot be reduced to mere moral development but must be rooted in the transformative work of the Holy Spirit in human life. This study contributes to bridging the gap between theology and pedagogy while offering a relevant framework for forming spiritually mature and Christlike younger generations amid the challenges of the modern era.