President Nelson taught, "Good inspiration is based upon good information." If you are a Latter-day Saint and haven't read Oliver Cowdery's 8 essays on Church history, including Letter VII, you need to read them to understand Church history, the Book of Mormon, and the related teachings of the prophets.
Thursday, March 9, 2017
Timeline of First Presidency and Quorum of the Twelve
Here's a wonderful graphical timeline to see the history of the First Presidency and the Quorum of the Twelve. Click on the link to see the interactive version.