It was in 1842 that five treaty ports in China were opened to commerce and to missions,--advance steps in the opening of all China to the gospel. In 1844 Turkey was prevailed upon to recognize the right of Moslems to become Christians, reversing all Moslem tradition. In 1844 Allen Gardiner established the South American Mission. In 1845 Livingstone's determination was formed to open up the African interior. Dr. A.T. Pierson, speaking of the wonderful way in which Providence opened the doors of access in those times, wrote as follows: "Most countries shut out Christian missions by organized opposition, so that to attempt to bear the good tidings was simply to dare death for Christ's sake; the only welcome awaiting God's messengers was that of cannibal ovens, merciless prisons, or martyr graves. But, as the little band advanced, on every hand the walls of Jericho fell, and the iron gates opened of their own accord. India, Siam, Burma, China, Japan, Turkey, Africa, Mexico, South America, the Papal States, and Korea were successively and successfully entered. Within five years, from 1853 to 1858, new facilities were given to the entrance and occupation of seven different countries, together embracing half the world's population."--_"Modern Mission Century," p. 25._ [Illustration: INTO THE HEART OF AFRICA The Victoria Falls railroad bridge over the Zambezi.] God's providence has laid under tribute every force and every resource for the opening of all lands--missionary endeavor, love of adventure, commercial enterprise, and scientific interest. Railways have been built through regions that were undiscovered seventy years ago, and among the passengers traveling now over the iron trail are men and women of tribes unknown fifty years ago. But the gospel message was to go to every tribe and tongue before the end; and wonderfully Providence has been opening the doors throughout all this "time of the end," and particularly in our generation. Material Agencies for the Work The prophecy represents not only a world-wide work, but a quick work in proclaiming the gospel message in the last days. The movement is symbolized in the Revelation by an angel flying in the midst of heaven, from land to land. And as to the closing work, when the end is near at hand, the Scripture says: "He will finish the work, and cut it short in righteousness: because a short work will the Lord make upon the earth." Rom. 9:28. "Not by might, nor by power, but by My Spirit, saith the Lord of hosts." This is the hope for a quickly finished work in all the earth in our time. Yet the Lord lays hold of material things for service; and wonderfully the hand of Providence has wrought in bringing into existence material agencies for a quick work in carrying the gospel to the world--such agencies as no generation before ours ever had.