Using a tone that is respectful is important. You need to read your fundraising letter several times and make any necessary changes. Have others read it and offer constructive criticism. Make notes of anything you or others have found that needs changing and write the letter again.
Experts say you should keep the letter as short as possible, without leaving out any important details. People will want to know what you are doing, in the simplest terms possible. Outline step by steps the things you will be doing. For example:
1. We will be sharing the gospel of how the death of God's Son on the cross can set men from from their sins and give eternal life.
2. We will be teaching new believers how the Bible says we should live and baptizing them.
3. We will be planting churches and training new Christians so they can run the church and share their faith with others.
4. When leaders are adequately trained, we will be going to other areas in the country to share our faith and plant more churches.
Close your letter with a short appeal for money. For example:
I need to raise $10,000 a month total from the churches who believe in the vision God has given me. I will be happy to speak at your church to tell about the mission field God has called me to. (If you are going on a short mission trip instead you could give an address for people to mail checks too.) Any financial support I receive is crucial but secondary to your prayer support. (You could list specific prayer requests.)
I appreciate your time in reading my letter and in considering supporting us.
Until all have heard,