Most Christians today don’t realize that the early church was entirely Jewish — Torah-observant believers worshiping in the Temple and celebrating the biblical feasts. But over the next few centuries, Christianity underwent a dramatic transformation into a predominantly Gentile religion stripped of its Jewish heritage. In this video, we trace the historical and theological journey from the first-century Jerusalem church to the Council of Nicaea and beyond. Learn how political upheaval, cultural tensions, and theological shifts led to this Great Separation — and why it matters today.