August 15, 1840
Nauvoo, Illinois
While preaching a funeral sermon for Colonel Seymour Brunson, Joseph Smith first announced the doctrine of baptism for the dead.
Sources:
History of the Church, Joseph Smith, 4:179
The Words of Joseph Smith: The Contemporary Accounts of the Nauvoo Discourses of the Prophet Joseph, Andrew F. Ehat, Lyndon W. Cook, p. 49
Read peer-reviewed articles about Joseph Smith and other Church history topics from BYU Studies. Visit byustudies.byu.edu.