Does it need to be pointed out that people do not and never truly have got their moral compass from biblical texts? The authors of the biblical texts simply codified the accepted morality norms of their day. They already believed them to be the basis for living a 'good' life before they were written down. Indeed, it is precisely because they considered them to be the basis of morality that they wrote them down at all. Of course, some people will argue that Moses came down from Mount Sinai carrying stone tablets that were inscribed by the very hand of God himself but then some people will believe any old codswallop if it is presented to them in ancient sounding scripture.
That's why there's no specific injunction on committing sexual offences in the Commandments. What we consider to be sexual offences today, they did not consider them offences at the time or didn't consider them to be suitably serious enough to warrant a mention.
That's why there's no specific injunction against slavery in the Commandments. We in the West now consider slavery to be one of the worst human rights violations imaginable. However, people back then didn't share our modern sensibilites. Hence no mention.
That's why there's no specific injunction against child abuse in the Commandments. Children in that day were the possessions of their parents or guardians. Children had no rights; ergo they were not worthy of a mention.
I could go on at length about what is not mentioned in the Commandments. I'm sure many others could too. But to those people who honestly believe that scriptural texts – be they Biblical, Islamic, Jewish, Hindu, etc. – are the foundations of their own morality, ask yourselves this:
Hypothetically, if it could be proven that God does not exist and never did, would you resort to murder or rape? If you realised and truely believed that your actions had no consequences for you after your death – no Heaven and no Hell – what would stop you from becoming a sociopath? And if you conclude that you would not become an anti-social, violent, malfeasant then to what do you attribute that?