I joined TNPC last month; however, I still need to write the letter officially terminating my membership at my parents' Methodist Church. The Riverside Church in the City of New York seeks to be a community of faith.Riverside Church is an interdenominational church in the Morningside Heights neighborhood of Manhattan in New York City, United States. Dear Chairman Board of Elders,. I am writing to withdraw my membership from Grace Community Church. You can always write a formal letter to your local church board stating your request and the reasons why. You are allowed to resign from a church whenever you wish to do so, no matter what your covenant, church constitution or designated church leader says. At Riverside, membership is more than a title, the right to vote on church business, or to serve as a lay leader. It is about responding to God's call. Your deposit is non-refundable.