You can always write a formal letter to your local church board stating your request and the reasons why. Contact your pastor or elder, though they may request you to withdraw in writing.I want to discuss how you can respectfully dismiss members from your church when it is necessary. To begin with, let's look at a court case. Reaching out to inactive church members needs a look into people's minds and figuring out why someone finds it hard to attend church. I have found some churches deny the withdrawal of membership while under church discipline. In this verse Jesus commands the church at Sardis to wake up. It had fallen into a slumber in which it supposed everything was fine. Some have concluded that a church member needs permission from the elders to leave a church. Jesus instructed this church to wake up and strengthen what remained.