This research delves into the social ethical perspective based on the thought of nation by the Christian leaders of whom escaped from Northern part of Hahn-peninsular after the liberation of Japanese colonization. Christians who escaped socialism dreamed of building a Christian nation. Han Kyungjik recognized Christianity and democracy the same. The state must be worthy of its protection and must be within the bounds of a lawful democratic process. He also emphasized the awareness and effort of Christian individuals for the realization of democracy and social stability and said that the church had the power to do so. Kim Jaejoon emphasized to build the kingdom of God in reality. The state is indispensable to exist because of human sin. So it must be democratic and free. Like Han Kyungjik, he insists on the separation of church and state and sovereignty of God. Because sovereignty is in God, democracy exists under Christianity. Christian politicians should play a prophetic role in proclaiming God’s sovereign intent, and the church should raise leaders to lead the people. On the whole, the North Korean Protestant Defectors insisted on democracy and anti-communism, and were favorable to the government, which had many Christians. During the First Republic, the North Korean Protestant Defectors have been defined as pro-government, anti-communist, conservative, and pro-government. In the late 1950s, however, when the government began to be incompetent and corrupt, criticism of the government and reflection on the church began within Christianity.