Write a long, nasty, mean-spirited letter to explain everything that they dislike about the church and articulate their own self-pity at length. I did leave, and am now in a new place much better for me.Thank you, thank you, for all you've done, for your sweet heart for the Lord and for your neighbors. Be honest, be upfront, and be loving and gentle. Entering into, engaging with, and departing from Christ's local body is a significant part of following Jesus. Customizing your Leaving a Church Letter is easy with Jotform Sign. Dear Chairman Board of Elders,. I am writing to withdraw my membership from Grace Community Church. This notarized letter is my formal resignation from the Church of Jesus Christ of Latterday Saints and is effective immediately. Leaving Mormonism may be one of the hardest decisions a person could ever make, there is nothing better than a biblical relationship with the true Jesus Christ.