Ok, I can understand about your questioning the earth being filled...what next thing.
BUT...
"if it was okay for people to have more than one wife in the bible days and to be in an army, why can't we do these things today?"
lol, you're too young to be worried about more than one wife! unless you are eyeballing the Mormons and want to join them!!!!
Joy
glad to see that you are thinking!