One must be very careful when determining the level of influence as this can often be quite an emotionally charged topic with interests that go beyond the purel

One must be very careful when determining the level of influence as this can often be quite an emotionally charged topic with interests that go beyond the purely academic on both sides. Some of the ideas that area said to be influential, historically don't appear fully formed in Zoroastrianism until after contact with Christianity. Like the other religions, Zoroastrianism did not appear in its modern form but gradually evolved some of its modern ideas.