King Benjamin named his son after his father. We might, therefore, refer to King Benjamin’s father as Mosiah1 and to King Benjamin’s son as Mosiah2. It was Mosiah1 who was commanded by the Lord to take those who would follow him and depart out of the land of Nephi into the wilderness because of the wickedness of the Nephites (see Omni 1:12). The book of Mosiah, however, is named after Mosiah2; he is the one who kept the record.