This paper is intended to examine the theology of Abraham who is the father of Judaism, Christianity, and Islam. The three religions have debated on several issues and fought in several battles. The one way is to break the wall that stood around them to know the origin of the three religions. Here, Ibrahim is a single actor as a way to answer the similarities and differences of the three religions. The story of Ibrahim still inspires the believer of all three faiths to become good Jews, Christians, and Muslims. Because the Abrahamic ethic is to maintain the pure monotheism, that there is no god except Allah, without any interruption and intervention of paganism and polytheism. Generally, this research is based on the history of mankind, and...