Letter withdrawing my forty year membership from my church. I joined TNPC last month; however, I still need to write the letter officially terminating my membership at my parents' Methodist Church.I have to write a resignation letter of sorts to officially be voted out as a non-member of the church I was attending. You can always write a formal letter to your local church board stating your request and the reasons why. I wish to bring to your attention a matter of personal significance- my decision to end my membership with our church. Create and write an official letter to announce your departure from a church. Download finished copies as PDFs. To register with Bexar County, verify your eligibility. Herman Sanchez submitted his resignation in a letter delivered to the district Friday. Former state Rep. John.