~muslim two sided version~?

i hear from people that people who are muslim (the religion that belive in alla ect) i hear from people that they don't belive in murder then i hear that there bible says to kill any none muslim (as in religion) and that a muslim man can his wife if he wants to do it belice it says in the bible they can is this ture any muslims out hear or anyone hear can clarify whats the real truth