Then go back to the most oldest and most read one. How many versions are needed, only one is in the 'public domain' meaning it can be quoted endlessly. The preface to that version comes with a preface that explains some of the back-ground, all other copyright Bibles have their preface being more about who own the words and what you are required to do should you want to 'quote them'. The KJV1611 version has the 10 Commandments carried over fully intact but reduced to two Laws, one is about our relationship with God and the other is about our relationship with each other.Of course they are from the New Testament, a book changed and interpreted so many times like you change your socks. It has been changed in order to accommodate certain social, political situations and lets not forget the personal ambitions of a few despots thru out history..
Yet the order of the Ten Commandments may have changed, the meanings of them remain pretty much the same.
If things like that don't guide you (or anybody) on which version you want to 'own' then at least expect some differences in the general over-view the texts lead you to 'understand'.