(1.) The _Commission_ under which a society like this does its work. The warrant for a missionary society, as for all missionary effort, is found in the words of our Saviour to his disciples, just before he went up on high: “All power is given unto me in heaven and on earth; go ye, therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost, teaching them to observe all things whatsoever I have commanded you, and lo, I am with you alway, even unto the end of the world.” Analyze these words, as repeated by three evangelists, and, we submit, they leave upon the mind the single, distinct impression that the work he commissioned his disciples to do was to teach or to preach Christ; was to call to repentance, and show how sin could be atoned and remitted through the blood of the Crucified. That message is given to this society—the most important ever committed to men; and to proclaim it freely and fully, all its resources of men and of money, of learning and of influence, should be put under contribution. This is the work than which nothing greater nor grander can be conceived. (2.) This will further appear if we study the _model_ of missionary work, which is presented to us in apostolic labor and example. If the _words_ of our Saviour define the work to be done, the example of the Apostles defines and illustrates the _manner_ in which it should be done. And beginning at Jerusalem, we find that the Apostles and the company of the believers gave themselves to prayer and to the ministry of the word. When the endowment of power had come, they began to speak in other tongues as the Spirit gave them utterance. They were now divinely empowered and set apart for their work. The Holy Ghost is now their inspirer and guide, and when the multitude came running together to see what this strange thing could mean, Peter, with the eleven, stood up and delivered that searching discourse which went with convincing and converting power to the hearts of 3,000 men.