The first level is Vedas. These are instructions like coming from a 'Parent'. Like Government passing a law or an order. Whether we agree or not better strictly follow faithfully else the stringent punishment is sure to follow. Most of the times the instructions come without explanation or logic. Don't ask me why ? Just follow because I say so, it is surely good for you now and later too. If we think deeply these instructions are designed for few of us who either are ignorant or else bit of a character where no other way will work. These are called 'Prabhu Sammitam'.
The second level is Puranas. These are like we are sitting in Cafe Coffee Day or even on Facebook a friend tells us to do something. He may take trouble to explain to us the benefits of our action. We understand and act promptly in the process getting benefit as well as strengthening our relationship, making it more intimate. We follow our friends instruction because we have trust and faith in him. Friend explains us the reason why this needs to be done in a particular manner and the benefits etc in a friendly way, by telling us various stories. It is like 'Adult' to 'Adult' conversation. These are called 'Suhrid Sammitam'. Ramayana, Mahabharata, Bhagwatam etc follow in this category.
The third level is Kavya like Bhajan and Keertan. It is like your girl friend or wife loving communicates with you which we are excited to carry out in order to see the smile on her face. Certain matters need to repeated again and again. Reminders are good. It is like to bring a change is a stubborn and rigid husband, she quips, cajoles, humors, entreats and does whatever it takes to change the situation. It is like a 'Child' who needs cuddling. This is called 'Kanta Sammitam'.
While you read all the above mentioned don't you find a similarity between the famous 'I'M OK - YOU'RE OK' by Thomas A Harris who made Transactional Analysis a global phenomenon? I am happy to share this with you. I was inspired to write this after reading one article written by Sri Chandrasekharendra Saraswati, the Sankarasharya of Kanchi Kamakoti Peetham.