Most practices in the Law that related to brother to brother relations are common sense. That does not mean they are spiritually binding. Let me offer another example. The first commandment, "You shall have no other gods before Me" stands as the pivotal command of all commands. Every other command is subordinate to this command. How this command was to be carried out was regulated by an extensive and comprehensive sacrificial system of worship that revolved around the altar. The basic principle still stands - “I am the Lord your God, who brought you out of the land of Egypt, out of the house of bondage. You shall have no other gods before Me." What is no longer binding is all of the catalogue of regulations that governed how God was to be honored at the altar.