170 years ago today - Sep 1, 1842

[D and C] Doctrine and Covenants 127: An epistle from Joseph Smith the Prophet to the Latter-day Saints at Nauvoo, Illinois, containing directions on baptism for the dead; dated at Nauvoo, September 1, 1842. HC 5: 142-144.

1-4, Joseph Smith glories in persecution and tribulation; 5-12, Records must be kept relative to baptisms for the dead.

[Source: Doctrine and Covenants, http://amzn.to/DoctrineandCovenants]