I think that ghost writing is a good idea. Sometimes people who can speak eloquently just can’t put pen to paper with any grace. Whether a minister or not, if you want your story told well in print, it’s a good idea to have an actual writer do it. The words, the concepts are still those of the person, but the crafting is done professionally. I know both ghost writers and people who have had their books ghost written. There is nothing shady, deceitful or untoward about it.