Write a long, nasty, mean-spirited letter to explain everything that they dislike about the church and articulate their own self-pity at length. I joined TNPC last month; however, I still need to write the letter officially terminating my membership at my parents' Methodist Church.Dear Chairman Board of Elders,. I am writing to withdraw my membership from Grace Community Church. Create and write an official letter to announce your departure from a church. Download finished copies as PDFs. I wish to bring to your attention a matter of personal significance- my decision to end my membership with our church.