Inherent in the calling of an elder is the responsibility to teach the commandments. They require no further calling, invitation, or setting apart, although these may take place. By virtue of their priesthood alone, they are both commissioned and authorized to teach the commandments and the gospel of Jesus Christ. The Lord referred to this in his words to Sidney Gilbert, take upon you mine ordination, even that of an elder, to preach faith and repentance and remission of sins, according to my word (DC 53:3). See also DC 42:12.