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Professor Wigmore has listed four preconditions to the existence of any privilege: (1) the parties assumed that the communication would forever be kept secret; (2) communications would often not be made if the privilege did not exist; (3) in the opinion of the community, the secrecy of a particular kind of communication (e.g., confidential communications to clergy) should be preserved; (4) the injury which would attend elimination of the privilege outweighs the benefits to justice. 8 J. WIGMORE, EVIDENCE § 2396 (McNaughton ed. 1961 & Supp. 1991). These conditions would apply equally to church members and nonmembers.