FormNX is the easiest way to create engaging CHURCH MEMBERSHIP FORM. Our drag-and-drop form builder lets you design CHURCH MEMBERSHIP FORM forms without coding.We welcome new members and are blessed that you are considering joining our parish. This form is provided online for your convenience. Please fill out this form to Update your Membership Information and provide information on your willingness to work in the church. Church Membership Registration Form. Please fill out the following information to register. By clicking on this link, you can download and print our "Church Membership Form" which you can fill out and snail-mail to become a Church Member. Members of the church were later called "Latter Day Saints" or "Mormons". Revelation given through Joseph Smith the Prophet to Oliver Cowdery, at Fayette, New York, September 1830.