Write a long, nasty, mean-spirited letter to explain everything that they dislike about the church and articulate their own self-pity at length. Withdrawal of membership is a unilateral and unfounded breaking with the church of which one is a member.I wish to bring to your attention a matter of personal significance- my decision to end my membership with our church. I have the intention of writing and submitting a letter to the church I was a part of that would basically entail withdrawing my membership. Got my membership withdrawal letter.