Jesus expresses the close relationship between essence and name here. Mormon provides no information on how the dispute had arisen. They were aware that they were part of something new. That new thing required a defining and identifying name. Moses’s church may have been one of the suggestions, since the Nephites had long practiced the law of Moses while looking forward to the Atoning Messiah. A literal understanding of Jesus’s statement that he had fulfilled the law (3 Ne. 12:17) had the logic of making “the church of Moses” a symbolic combination of the old and the new. Jesus reminds them, however, that the name must express the essential identity. Therefore, the Messiah’s (or, as we in the Greek-influenced version with which we are most familiar, Christ’s) church must be named for him; or when he calls for those bearing his name, it cannot respond.