The following application is in three parts. As you are filling out the application feel free to call our office if you need assistance.Simply fill in your personal information and the letter is readytogo. Plus, each letter can be easily modified to fit your specific needs. The applicant must submit a copy of the minister's credentials issued from the religious society or congregation. Gov(opens in a new window). We are writing this letter to you to determine your intentions regarding your membership status here at (NAME OF CHURCH). This can be helpful when requesting financing from a financial institution. A letter of invitation includes an explicit invitation to join the church as an official member.