While the Church is composed of genuine believers out of every kindred, tongue, tribe and nation, it is not a national or international entity.  When we understand this, we will be saved from the nationalistic spirit which has caused divisions in the body of Jesus Christ.
We must come to the understanding scripturally that the New Testament Church is not an extension of Judaism as the Mosaic covenant.  Christianity is the new wine of the new covenant placed in the new wineskin which is the New Testament Church.