The conclusion of an essay should show how your evidence supports your initial thesis. Since you haven't mentioned in your question what sort of thesis you have developed or what sort of support you have provided for your thesis, it's difficult to say what your conclusion should be. A conclusion just tacked on at random with nothing to do with the rest of the essay is unlikely to impress a teacher.
There are several directions you can go with a paper about this passage. The first is to describe its influence on subsequent Christian notions of marriage. Another is to look at how Paul's notion of marriage was influenced by Jewish traditions. Another thing to investigate is whether early Christian concepts of marriage were based not on theological imperative but a desire to become a "respectable" religion in the eyes of the Romans.