How do I write a letter to change my church membership? This is an almost unanswerable question without context.Please Note: You must have your: Church Legal Name; Church Address; Employer Identification Number. (You can contact the District Office if you need help). Do you want new ways to welcome members into your church? Check out these top church membership welcome letter templates and best practices. Clergy Compensation Forms and Continuing Education Grants for the United Methodist Church Northern Illinois Conference. We sincerely hope this letter finds you well and in good faith. To find out if you qualify, write a letter of request to the Illinois Department of Revenue, Sales. These are the instructions for completing and filing the AG990-IL form and all required attachments and fees.