"Fifty years ago the major missiological discussion was UPG (Unreached People Group). This was followed by Urban/Mega Cities, 10/40 Window, Holistic Business as Missions, and Diaspora Missions. While all these remain, the contour of Global Missions, however, in the coming years is Generational and Polycentric missiology. The UPG are now in our own circle. The growing population among the younger people and the aging population cannot be ignored by the Global Church. The gospel is for all people."

- Sadiri Joy Tira, D.Min., D.Miss.