I'll have to check with some friends who know more about this than I do, but I think I can say a few things about what you said.
1: I think it should be important to note that the Bible is a collection of books, and the collection could have different contexts (Such as Psalms being mostly poetry and songs).
2: I believe that it depends on the interpretation of Genesis, since Young Earth Creationism wasn't on the rise till recently and that an older earth and the Bible wasn't mutually exclusive, heck i've seen people talk about how the global flood could also have been argued to be a regional flood instead.
3: I think it's kind of inaccurate to say that the Egyptians would have recorded an event in history where their Gods effectively got spit on by another God, in fact we see this today with the Japanese where they tend to stay away from talking about World War 2, or anyone who would rather deny an event if it would spare them humiliation, it's why if someone would admit to something that isn't advantageous or an outright negative gain for them to admit, chances are it's accurate. Such an event would have been way embarrassing, but the jew migration i'll have to get back to you on that.
4: On the book of Maccabees "The book is held as canonical scripture by the Catholic, Orthodox, and Oriental Orthodox churches (except for the Orthodox Tewahedo), but not by Protestant denominations nor any major branches of Judaism", i'll have to get back to you on that with some friends of mine about the Canonicity of this book, but as far as I know, it depends on the denomination.
Also kind is going off topic, who brought up the first comment that started this?