Most computers have what are called "default" programs or options.  Unless you specifically program them to do something different, they will follow the pre-set programming already installed. I think the same thing is true with religion. It seems to me there are certain religious ideas which appear to be pre-installed into mankind. These ideas can be found in every religion. And one of the most prominent examples of default religion is the emphasis of the external over the internal.

Jesus often criticized the Pharisees of His day for seeking holiness through outward ceremony rather than the inward transformation of the heart. Such external religion often appears to be more demanding but in fact it is more permissive because it distracts us from the weightier matters of spirituality. It is much easier to determine if I am washing my hands correctly, or eating the right foods than if my life is characterized by humility, mercy and justice. As followers of Christ we must continuously allow Jesus to re-program our spirits and delete from our system those ideas and presumptions that are incompatible with His own divine software.