According to John Sorenson, the performance of sacrifices is not mentioned in the bulk of the Book of Mormon record between Mosiah 2:3 and 3 Nephi 9:19. The later verse tells us that some sacrifices were being practiced, but we are not told of what they consisted. It is unlikely that they approached the cultural centrality of the temple sacrifices in Israel during the same period, or more would have been said of them. We simply don't know what was in the Nephite version of the "law of Moses." [John L. Sorenson, "Viva Zapato! Hurray for the Shoe! in Review of Books on the Book of Mormon, Vol. 6, Num. 1, p. 343] [See the commentary on Alma 34:10]