From simplest words and grammatical usages, some parts get fixed with intricate vocabulary and thought process..

a query--

who actually told the Bhagawad Gita and who wrote it? Was the full B Gita written by one Veda Vyasa at one go or a few persons wrote different slokas .... ? No doubt the context is nice, the various paths and slokas are good ... but still a doubt.... is the style of one person or several persons? 

My answer

this is simply not answerable from literary or historical angle.. not even from philosophical angle.

1. Even within the seven hundred stanzas, the literary style varies.. From simplest words and grammatical usages, some parts get fixed with intricate vocabulary and thought process.. Take the Oordhwamoolam... the description of Vishvaroopa and afterwards and so on.

2. Howsoever we may attribute godliness to Krishna, commonsense would not permit us to believe that the lecture of Gita was rendered in a battlefield.. If the opponents had noticed in the first place the Arjuna had an emotional breakdown verging on schizophrenia the enemies would have finished the battle even before ten of the seven hundred slokas were sung..

3. All major schools of philosophy are discussed.. Sankhya, Bhakthi, Vedanta, Yoga, Gnana and so on.. To win a battle a mere pep talk underlining the benefits of battle and the fruits of victory would have sufficed.

4. This is the most widely discussed issue.. and everyone who has read or heard about gita hold his own view in this matter