Comment: I would say...

(See in situ)

In reply to comment: Wait, wait, wait. (see in situ)

I would say...

...that the particular commands and laws you cite from the OT were particular to that time and place, where a nation was being carved out of the ancient world and firewalls being put up for them to take seriously their role as a priesthood nation, set apart from the other cultures around them. Other laws are timeless, such as love thy neighbor -- and this higher Law of Love is fulfilled in Christ, for all people, for all time.