Mormon Doctrine, 2d ed. [Salt Lake City: Bookcraft, 1966], 183; “Deacons are “appointed to watch over the church, to be standing ministers unto the church.” (D. & C. 84:111.) …
Among other things, it is the practice of the Church to assign them to pass the sacrament, perform messenger service, act as ushers, keep church facilities in good repair, go home teaching, and perform special assignments at the direction of the bishopric. Many of their assigned functions are comparable to those performed by the Levites of old. (Doctrines of Salvation, vol. 3, pp. 111-114.)” – Bruce R. McConkie [emp. mine]
