My wife's grand mother's maiden name was Cohen, no, she wasn't Jewish either.
I'm presently reading in the Torah (I'm not Jewish either).
I got interested recently when someone posted a picture with a caption that "the Hebrews came out of Egypt armed", this doesn't jibe with the Old Testament version, so like a good little Baptist boy, I started studying to learn more.
It would be helpful if I could read the Hebrew text in the original language but I can't.
hehe
I tend to resist Procrustean readings of the Torah!
You might be interested these comments on Exodus 13:
http://www.kby.org/english/torat-yavneh/view.asp?id=3664
It’s a question that the bible text does not speak to. It’s possible that the now-written oral traditions of the Jews could furnish further details in some cases, but remember Jesus scolded the Pharisees, the custodians of these works, that they were getting it wrong.