Christian affiliation is declining across the West, leaving many wondering how evangelism can flourish in secular contexts. Yet history reminds us that the earliest Christians grew from a few thousand to over four million within ten generations—without armies, politics, or cultural power. This keynote explores how the Acts 2 portrait of the first church offers vital lessons for the church today—about our approach to theological learning, the nature of Christian community, and our zeal for God and a lost world amidst hardship. With historical insight and contemporary application, this session asks: What can the ancient church teach the future church about evangelism?
