Do we live in the ancient world as a part of a large extended family that will be wiped out by neighboring nations if we don't maintain our collective identity?
Are you trying to make a point that ten commandments are man-made and they did not withstand the test of time?
There's a New Testament book called Hebrews that answers this question exhaustively. You should read it. In a nutshell - Jesus gets killed instead of the sinners.