Write a long, nasty, mean-spirited letter to explain everything that they dislike about the church and articulate their own self-pity at length. Customizing your Leaving a Church Letter is easy with Jotform Sign.What are some good reasons for leaving your local congregation? Be honest, be upfront, and be loving and gentle. Here are three basic and acceptable reasons for leaving a church. Overall information about the Church Resignation Letter, how to prepare one, why and when to use it, and the mistakes to avoid. Below, we'll take a look at some of the options available and two sample letters to remove a board member. 3) Actively seek Christians to fellowship with around Jesus Christ. Pagan Christianity, p. 269. This isn't loving or fair to your brothers and sisters at the church.