Contact the pastor before you go and explain why you are changing to a different church. Communicate clearly and graciously.I recommend doing this in person, on the phone, or through a thoughtful, personal email. Kindly consider what you have just read. Be honest, be upfront, and be loving and gentle. Use the appropriate salutation. We love each of you so much, and are very sad to say goodbye. We have grown so much during our time here. Thank you for loving, challenging, encouraging, and nurturing us. I did leave, and am now in a new place much better for me.