However, when we look at the minutes of the mission conferences, big and small, held over the past 100 years, we are saddened by the fact that “the importance and urgency of missions to children and youth” was never mentioned even once. This is because both ministry and missions were focused only on adults.” Then, in 2008, the world-renowned mission strategist Dr. Louis Bush and the Vietnam missionary pastor Rev. Nam-soo Kim met in New York, and the “World Evangelization Strategy through Next Generation Missions” was born. The following year, in September 2009, the first Global Summit Conference was held at the New York Promise Church, and it was officially introduced to the world under the name of the “9/1 Window Movement.” We cannot express how thankful we are that this movement has helped to put together the “last puzzle” piece that had been missing for the past 4 years. Today’s “Next Gen” has two faces. On one side, it is the dream of the family, the future of the church, and the hope of the nation and society. But if you look at the other side, it has been God's tears and sorrow for a long time.