In other words, its wholly possible to speak a language while remaining oblivious to its grammar and even its written form. Likewise (by metaphor) isn't it also possible to have a faith that is broadly unconcerned with the details and only interested in 'getting on with it'?
If this comparison works then does the following hold true as well: yes, you can speak without knowing any grammar and yet when you try to teach someone else to speak this new language (or at least to teach them WELL) don't you then have a problem because you suddenly NEED the stuff you previously thought was irrelevant?
Can you see where I am going?
Faith is, of course, essential and can be enjoyed and lived without a care for the supposed minutiae of doctrine/theology. The trouble, however, comes when you try to talk to other people about this new 'language' of faith and you suddenly realise that without a 'grammar' you are left with mere subjective feelings and perspectives...
What do you think? Is this true?