"This sociological and ethnographic study develops and employs an ecosystemic approach to examine the effects of digitalization on religious beliefs and practices among young Christians in a Pentecostal megachurch in Singapore. Through extensive fieldwork and qualitative data analysis, this paper uncovers how the religious identity of young Christians evolves within a dynamic ecosystem shaped by indirect and direct digitalization. It outlines how Christian beliefs and practices transform indirectly through the digitalization of faith-based communities and religious authorities, and directly through individual engagement with social media and communication apps. This research contributes to understanding the interplay between religion and digitalization in the lives of young Christians in Southeast Asia, which calls for further exploration in this diverse cultural context. Conceptually, this paper proposes a framework for a more systematic and comprehensive study of the blended nature of online and offline religion, digital religion." (Abstract)