It is tempting to have feel-good unity between mainstream Christianity, Judaism, and Islam. But it is not at all possible. The tenets of Christianity and Judaism are quite different from those of Islam. The names of their respective gods are different, while the commandments given in their holy books are in stark contrast to one another in many areas.
In an attempt at unity and solidarity, naive or perhaps uninformed Muslims will propose similarities, even stating that perhaps Sharia Law is compatible with the US Constitution, which has as its foundation Greek, Roman, and Hebrew/Biblical law. This cannot be farther from the truth.
The Jewish god does not equal the Muslim god. The Hebrew prophet in the Jewish book quoted God speaking to his people, Israel:
“You are my witnesses,” declares Yehovah, “and my servant whom I have chosen, that you may know and believe me and understand that I am he. Before me no god was formed, nor shall there be any after me. I, even I am Yehovah, and besides me there is no savior” (Isaiah 43:10-11).
God stated that anyone who changes his commandments given to Moses is a false prophet, making Muhammad a false prophet:
“Everything that I command you, you shall be careful to do. You shall not add to it or take from it. If a prophet or a dreamer of dreams arises among you and gives you a sign or a wonder, and the sign or wonder that he tells you comes to pass, and if he says, ‘Let us go after other gods,’ which you have not known, ‘and let us serve them,’ you shall not listen to the words of that prophet or that dreamer of dreams. For Yehovah your God is testing you, to know whether you love Yehovah your God with all your heart and with all your soul. You shall walk after Yehovah your God and fear him and keep his commandments and obey his voice, and you shall serve him and hold fast to him” (Deuteronomy 12:32-13:5).
Both the names of the gods and the commandments given to their respective prophets are different, with many places in the holy books having irreconcilable conflicts. Consequently, Sharia Law is not really similar to the US Constitution, far from it.