I'm an agnostic because of questions like this and because I have read the bible cover to cover 7 times.
I will say the short and simple answer to one law for Adam and another for Satin is Satin is a spirit like God
and Adam was a material being.
As far as the question on the Egyptian live stock.
Its a what if question.
The first question is, are the stories in the bible true?
If you want to go with the premise that they are.
Then you will find an answer to any questions that raise incoherencies regarding the question.
If you dont beleive they are true than you wont find and answer. Or any answer you find wont be acceptable.
If your an agnostic like I am you will find an incoherency and an answer and you still wont know what to believe.
So that tells me If one wants the biblical salvation they have to take the leap and be saved by faith.
The short and simple answer to the dissappearing live stock is.
Wandering in the wilderness they died off.
Some could have wandered off, stampeded off.
Probably died do to the extreme harsh conditions of being lost in the wilderness.
One questions leads to another and the house of cards falls down.
But the house of cards can magically and gloriously reasemble itself before your eyes by injecting a shot
of faith.
Last night at work I read the book of Romans and its not even as simple as having faith.
According to the bible everything is predestined. Especially according to the book of Romans.
We are predestined to be believers, agnostics, and atheist.
Theres really nothing we can do about it but sit back and enjoy the ride.
Hitler had no choice but to be Hitler. Bush had no choice but to be Bush. The pope had no choice but to be the pope
and on and on and on.