Nowadays, it is often said that Judaism and Islam possess the same God and are therefore similar religions. It is necessary to say that one tends to make the projection starting from what one knows best and, when our knowledge about Islam is limited, one is inclined to see the Koran as the Torah of the Muslims, Muhammad as The Moses of Muslims, mosques as Muslim synagogues and imams as Muslim rabbis. On the Muslim side, very little is known about the Torah. The reality is obviously more complex. The respective doctrines of Judaism and Islam have fundamental differences which make them, in several aspects, religions with diametrically opposed values. These differences are obvious to the eyes when we begin to compare them rigorously. However, many similarities are also noticeable from the two traditions.
Of course, the assertion of the existence of the one God, and the fact that it exceeds all representations, is common to the starting point. Yet, as much as they seem different on the surface, the principle of the belief of the Holy book and the eligible acts needed to join God and accomplish his commandments and the religious duties, are aspects that have in depth quite the same meaning. As for divergences in common facets of both traditions, the ritual of circumcision and Jesus and his religious status will be the ones argued throughout this essay. One of the principles of faith in Judaism and Islam is indeed the affirmation of a single God, without any intermediary or associate. In Christian theology, what is expressed as the Trinity is the designation of God in three persons (Father, Son and Holy Spirit) distinct, equal and consubstantial in one and indivisible nature and which doesn’t, in any case, relate to Muslims and Jews. In Islam and Judaism, the idea of God as a duality or trinity is heretical; it is even considered by some as polytheistic. The belief in Jesus as a divinity, part of divinity or son of God is therefore re.