Something I have said for many years, people today cannot imagine the living conditions back then and the brutality which took place on a regular basis. This was a big reason why Jesus could not come to Earth as He did later on in history. Mankind was not ready for its Savior. It was still very uncivilized in Jesus' time, but at least there were many who could become disciples to carry the Gospel to the world.
This was one of the reasons for the Ten Commandments and the Law given to Moses. These were rules to govern and guide the civilizing process which needed to take place.
For another horrific section, try Judges 19 thru 20.