William O. Douglas,
Eagles v. United States (329 U.S. 304…
“ If a panel is truly expert in the field, its expertness is not necessarily limited to knowledge of the theological shools the course of training, and the educational practices and traditions. Its acquaintance with the ministry of that faith and with the norms of the profession may well give it special insight into the claims of those seeking exemption. To draw the line at questions technically ecclesiastical is to make a distinction which may be wholly arbitrary in terms of the panel's expertness. A panel might act on irrelevancies ”
