[Author’s note: Hugh Nibley first used the phrase “churches of anticipation” with regards to Alma et alis back in the 1950s. I had forgotten that until recently re-reading his writings on the Book of Mormon. 01/31/2012]
There is a curious religious transition that occurs among the Nephites about a century before the birth of Christ. Up until then, the Nephites appear to have been following the law of Moses, in spite of a clear and unprecedented Christology introduced by Lehi1, Nephi1 and Jacob in the 5th century BC and re-emphasized by King Benjamin around 124 BC just before he abdicated in favor of his son Mosiah2. And even though Nephi1 clearly indicated the need for baptism in following the Savior’s (future) example, there is no record of baptism being practiced for roughly half a millennium afterwards. Instead, the Nephite civilization during that time appears to be a continual kingship with prophets calling the people to repentance.
Those two traditions appear to merge with King Mosiah1, “being warned of the lord”, leading a Nephite exodus from the land of Nephi to the land of Zarahemla. Mosiah1 continues as a prophet/king, interpreting the Jaredite (stone) engravings “by the gift and power of God.” His son, King Benjamin, clearly continues as a prophet/king; as noted above, he has a significant vision of the coming Messiah and puts his people under covenant to take upon themselves the name of Christ — though still with no mention of baptism. Mosiah2 appears to continue that prophet/king tradition, though there is less indication of any revelation or prophecy on his part (however, see Mosiah 21:28).