Every Christian should live life with an open Bible and an open map.
Obligation of a Generation to Evangelize the World
What is a People Group?
When God gives you a task, it is infinitely important that you know the definition of the task. God has promised to reach all the nations of the earth and commissioned us as His ambassadors in that work. In order to be good stewards of this mission we must have a firm grip on the extent of the task, which, in the work of world missions, brings us to look closely at the terms that the Bible uses for the task. Namely, what does it mean to reach the nations?
The 10/40 Window
If the command given by Jesus is to make disciples of all nations (or ethnic groups), then common sense would tell us our job is to find those nations (ethnic groups) that have not been discipled (taught to be followers of Christ). The vast majority of these unreached people live in an area of the world nicknamed the "10/40 window."
