Your thesis is your main point. These supporting ideas and evidence may also be called premises or points. The body of your essay contains the essay's argument. In addition, the body of an essay connects these ideas. The key to writing arguments, however, is the connections made between ideas and their evidence.
Many writers merely list ideas and their evidence, rather than linking one to the next.
In such essays, the order of the ideas or premises has no logical relationship. This is a problem if your goal is either to prove or to persuade. This is a one idea essay, and it's too simplistic. College-level arguments include more than one idea. Your argument is your claim, what proves your thesis.