Similarities and Differences Between Christianity, Judaism, and Islam There are many similarities and differences between Judaism, Christianity, and Islam. There are also many differences that separate the world's three major religions. This article will examine all three. The main similarities that the three religions share are that they are all monotheistic. All this means is that they believe in one god and that he is the supreme ruler of all things. They also believe that all things are created equal under one god. They all have books on what they believe to be the word of God. The Jews have their book known as the Torah. Christians have their book known as the Bible. Finally, the Islamic people have their book known as the Quran. These three books contain scriptures. These three major religions also share the belief that there is a major region that they claim as their Holy Land. Jews and Christians claim Jerusalem, Israel as the Holy Land, while the Islamic people claim Mecca, Saudi Arabia. It is in these places that people believe that ...