Return the list of all avialable books. Return the list of all avialable chapters. Return the list of all avialable verses. Return the prolog text of a specific chapter. Return the text of all specific verse. Get the subnodes of a given folder path. Return the list of all avialable books. Return the list of all avialable chapters. Return the list of all avialable verses. Return the prolog text of a specific chapter. Return the text of all specific verse. Get the subnodes of a given folder path.