The body of a cover letter is the most important part of this type of document. The body of a cover letter informs your employer of your past experiences, and the abilities that you believe can be useful to you in this new position. It also gives you a chance to explain why you think you would be a good fit in the position, and why the employer should consider you instead of all the other candidates. It is important to make the body of a cover letter as concise as possible, and to only focus on qualities that are relevant to the job offer.