Now facing its third millennium, the Christian church faces a moment of great historical importance and opportunity. The modern missionary movement is now over two centuries old. Looking back over those years, it is clear that God mobilized His people to make great strides in taking the gospel to many parts of the world. Today, the church faces new challenges. Without exaggeration, we can point to the twenty-first century as a new era in Christian missions, and recognize it as a vast new opportunity.