Write a long, nasty, mean-spirited letter to explain everything that they dislike about the church and articulate their own self-pity at length. Create and write an official letter to announce your departure from a church.Download finished copies as PDFs. I am approaching a transition in my ministry. I am about to leave the longest pastorate I have been in since my ordination just short of my 10-year anniversary. Dear Chairman Board of Elders,. I am writing to withdraw my membership from Grace Community Church. Share honestly but graciously why your family chose to leave and why you are excited about becoming part of this new church family. Leaving a church can often be a complicated and painful process. Here are a few tips for how to leave a church gracefully.