NotPerfect asks, "I would truly like to understand why this point is so important."
It's extremely important, Not. If one admits that there's a single error in the Bible, then one is vulnerable to the argument that there might be an error anywhere, and that perhaps the story of the resurrection is fictional.
St. Augustine (354-430) was one of the founders of the Roman Catholic Church. He well understood that Christianity was like a house of cards; if the church dared to admit to even a single error in the Bible, who could say there wasn't an error on every page? The resurrection story might then be false and everyone's hopes are in vain. This is what he said:
"The most disastrous consequences must follow upon our believing that anything false is found in the sacred books....If you [even] once admit into such a high sanctuary of authority one false statement, there will not be left a single sentence of those books, which, if appearing to anyone difficult in practice or hard to believe, may not by the same fatal rule be explained away as a statement, in which intentionally, the author declared what was not true." --St. Augustine in Epistula, p. 28.
So, you see, Not, if Pom agrees that the Exodus writers offered contradictory information, Pom would have to agree that the Bible might be in error someplace else, and that perhaps none of the Jesus stories can be believed. That's why this point is so important.
Joseph F. Alward
"Skeptical Views of Christianity and the Bible"
http://members.aol.com/jalw/joseph_alward.html