Why do people believe God ? Nowadays, many people tendstend to believe and rely on God, who has a mighty strengths and everlasting power. But, in the case of Japan, half of the Japanese are likely to worship everything, such as animals or any tangible thing as God . However, according to the research in Korea in 2010, people believe God due to their own good. In the case of Muslim Muslims, through doing prayer or their good acts, people might believe that they could have rewards from AllaAllah for their good acts. Then, could I say that their purpose of having religion is only for their own benefit ? In my opinion, believing God might needsneed self - sacrifice, and love as well as patience. Also, true love and strong trust towards God will be needed because God is invisible and intangible.