Just write the facts of why you're leaving and ask them to not try to get you to change your mind. Customizing your Leaving a Church Letter is easy with Jotform Sign.Be honest, be upfront, and be loving and gentle. If need be, write a letter and have it before you when you dialog in person. Dear Chairman Board of Elders, I am writing to withdraw my membership from Grace Community Church. Please enter the institution's response below. It should be written in the form of a letter to the Institutional.