Judaism, Christianity and Islam are considered Abrahamic religions because they worship the God of Abraham. Because of language differences, they call upon God by different names (Hebrew: אֱלֹהִים / Arabic: الله), but they are one and the same. They believe that God is the Creator of the universe.
Both Judaism and Christianity originated from what is known today as the Occupied Palestinian Territories and Israel, while Islam began in the city of Makkah located in present-day Saudi Arabia. Hence all three Abrahamic religions originate from the Middle East.
Adherents of all three Abrahamic faiths believe that there are prophets that God has sent to teach the people. Judaism, Christianity and Islam share many of the same stories of these prophets in their holy books. Judaism, Christianity and Islam all consider Jerusalem an important holy site, but for different reasons. All three Abrahamic religions believe that followers are required to obey a moral code that have been presented by the prophets.