They all believe in God
They all believe in an after life of some sort
They are all a religion
All stem from the one religion of Zoroastrianism which is the oldest religion.
Muslim, Judaism, Zoroastrianism do not believe Jesus was the son of God. Only Christians hold this belief.
All are from one God! talk about the same message, so Islam is not a new religion. It is in essence the same message and guidance which Allah revealed to all His Prophets. ?Say: We believe in Allah and that which was revealed to Abraham and Ishmael and Isaac and Jacob and the tribes and that which was given to Moses and Jesus and to the Prophets from their Lord; we make no distinction between any of them, and to Him we submit.? (Holy Qur?an 3:83)
The message which was revealed to Muhammad, the last Prophet, is Islam in its comprehensive, complete and final form.
They are all monotheistic religions, first of all, and all believe in the same God. Zoroastrianism is the oldest of the monotheistic religions. All religions revere prophets. For Zoroastrians, it was Zarathustra. Muslims revere all the prophets, peace be upon them, of Judaism and Christianity along with the prophet Muhammad, peace be upon him. All four came from the same area of the globe. All four believe God rewards us for good deeds and kindness.
Zoroastrianism is the oldest. Apparently there are a lot of haters here spreading ignorance and giving negative marks to people who are right.
Zarathushtra founded Zoroastrianism some 3,400 years ago in what is now Afghanistan.
Judaism was influenced by Zoroastrianism in that it got the notion of a universal benevolent God instead of its original, vengeful tribal god that made a covenant with only the people of Israel.
Christians were inspired by Zoroastrians as well as Jews, for the notion of immaculate conception and virgin birth come from the Saoshyan and Mithra of Zoroastrianism.
Muslims pretty much copied previous beliefs and mixed with with Arabian paganism (in fact one of the co-founders of Islam was Rozbeh of Khorassan, renamed Slaman Farsi, a former Zoroastrian converted to Christianity who finally settled into Islam and brought many themes common to both those religions into Islam
All have the common theme of a final judgment for good or bad deeds, a final Resurrection as well as arch-angels and demons all residing under a supreme deity: Ahura Mazda, Yahweh or Allah.