2 Nephi 9:23-24. Baptism Before Christ
The Book of Mormon has Alma baptizing people about a century before the coming of Christ (Mosiah 18) and even in Nephi’s time (ca. 600 BC) indicates that baptism is required for salvation (2 Nephi 9:23-24; see also 2 Nephi 31:4-18). But there is no evidence in the Bible that Jews baptized before the mission of John the Baptist, who was the forerunner for Christ.