How did Joseph Smith do it? How did he, when just a teenager, open the floodgates of revelation on a spring day in 1820? How did he continue to receive, restore, and refine the rich doctrine of the restored gospel until his martyrdom in 1844? And how could a man who delivered such a comprehensive system of doctrine, that laid such a profound theological foundation, be anything other than a prophet of God?

Latterday Saint doctrine is based on

A strong testimony requires a solid foundation. This is especially true in our day, when we have so much access to information from so many sources, both reliable and spurious. With the numerous voices competing for our attention, how can we avoid being "carried about with every wind of doctrine" (Eph. 4:14)?

In The Blueprint's of Christ's Church, Tad R. Callister provides a thoughtful, systematic explanation of foundational gospel principles,