The closer we get to Dominion Theology the closer we get to living by the sword. Jesus said, “My kingdom is not of this world. If my kingdom were of this world my disciples would fight.” This seems to mean that we are not moving toward a true understanding of the kingdom of God in this world as we move toward a greater and greater use of the sword to authorize kingdom values.
It is not the priests who are given the sword but the magistrates. And the magistrates rule not by virtue of their claim to revelation but by virtue of their claim to providential authorization. In some cultures this providential authorization has been through a line of kings, in other cultures through various contests, and in our own culture through a democratic representative process.
It seems that the theocratic ideal of Israel in the Old Testament was specifically abandoned in the New Testament as the Gospel ceased to be focused on an ethnic and political reality called Israel (Matt. 21:43) and became a multicultural, multiethnic worldwide movement without ethnic or political definition. It will be fitting, when Christ returns, that he be given the right to establish a kingdom of more specific political boundaries. But in the meantime we do well to exert our influence in ways that do not put the sword into the hands of the priests.
By John Piper © Desiring God