The Song of Gung-Eul(弓乙), which is said to have been written by Jeong Book-chang(鄭北窓), is a song of prophecy that tells the people how to escape from the tribulation that will come. This song actively gives moral meaning to these “Gung-Gung(弓弓)” and “Eul-Eul(乙乙)” and presents them as a way to save lives when the world is in trouble. This was accepted as an attractive element for the new religions of the Korean modern period that emphasized the Gaebyeok(開闢, Great Opening). They used ‘Gung-Eul(弓乙)’ as a keyword to emphasize morality, and tried to put the doctrinal meaning in the Song of Gung-Eul. In this article, several versions of the Song of Gung-Eul were presented, and the types were classified. And this paper presented the prophetic and moral teachings of the Song of Gung-Eul.