Understanding Missions

A webpage dedicated to “explaining the role of missionaries in the decimation of uncontacted tribes around the world” declares that “uncontacted tribes” are a “vitally important part of human diversity” that faces “catastrophe” without protection.  They vow to “keep evangelical missionaries away from uncontacted tribes.”  Is there truth in what they say?  “Understanding Missions” is vital to the church if she is to properly obey her Lord (Matt. 28:19-20) in the midst of this kind of opposition.