Your argument should make an informed claim about the texts you have selected and the topic you have formulated. The best essays will do the following to prepare and articulate an argument:
survey research about the author and the historical/cultural contexts relevant to his/her writings
research the views that tend to frame the discussion about the authors and topics
declare and situate your position within that broader discussion
develop your argument for your position with plenty of textual evidence and supportive logic
discredit other competing viewpoints or positions (refutation).