The best thing to do is to explain the reasons for leaving so that the church is not hurt or mystified as to why you are leaving. Be honest, be upfront, and be loving and gentle.Maybe you are thinking about leaving the one you are currently at? Maybe you just left a church and are "shopping" for just the right church? 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. 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. Tell the pastor you are leaving.