Simply send a letter and wish them God's blessing. Explain that you are moving and are ending you membership.Dear Chairman Board of Elders,. I am writing to withdraw my membership from Grace Community Church. Grace and peace to you in this day! I joined TNPC last month; however, I still need to write the letter officially terminating my membership at my parents' Methodist Church. I feel that since they no longer care to have me around as a just a member and not a member and volunteer, it make be best for me to remove myself as a member.