First, and rather obviously, early Christians were moved by a burning conviction. The Event had happened. God had invaded time and Christians were captivated by the creative power of that grand news. They knew that men had been redeemed and they could not keep to themselves the tidings of salvation. That unshakable assurance, in the face of every obstacle including martyrdom itself, helps explain the growth of the church. Second, the Christian gospel met a widely felt need in the hearts of people.