This study examines how the core proclamation of the apostolic speeches in Acts, particularly the creedal statement “God raised Jesus”, functions as a foundational theological statement with significant implications for New Testament theology and systematic theology. After identifying the creedal statement within primary speeches in Acts through a structural linguistic analysis, this study traces its structural prominence and theological significance across the Gospels and Pauline epistles. Furthermore, it investigates how this core statement evolved into a creedal affirmation in early Christian theology, particularly in relation to Nicene and Chalcedonian formulations. Finally, it engages with modern systematic theology, particularly in dialogue with scholars who have examined the significance of Jesus’s resurrection, to assess its ongoing relevance in contemporary Christological discussions. By bridging New Testament theology, historical creedal development, and systematic theology, this paper ultimately argues that the apostolic proclamation of Jesus’s resurrection should be considered the doctrinal foundation upon which high Christology is articulated, as it not only establishes Jesus’s divine status but also forms the core of the gospel proclaimed by the apostles and serves as a central focus of evangelical missionary messages.