That hunger of the flesh, that longing for ease, that terror of incarceration, that insistence on tribal honour being obeyed: all of that exists, and it exists everywhere. ↗
If you go back in time you'll find tribes that were essentially only concerned with their own tribal members. If you were a member of another tribe, you could be killed with impunity. ↗
Many of the racial problems in America are caused by the fact that people are innately tribal, and politicians know how to exploit that biological fact. ↗
When Jesus calls his disciples 'brothers' and 'friends', he is contradicting general Jewish usage and breaking through into a new concept of brotherhood which is not tribal, but open to any person. ↗