Entering into, engaging with, and departing from Christ's local body is a significant part of following Jesus. 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 write this farewell message to express my deep gratitude and affection as I prepare to embark on a new chapter in my journey as a priest. Keep your former church in your prayers and speak well of it. If people are gracious enough to let me know they are leaving, I write them a letter and thank them for their attendance and past service.