Regarding the administration of the Sacrament, Gordon B. Hinckley taught,

“The priest at the sacrament table places all in the congregation under sacred covenant. The offering of the prayer is not a ritual to be thoughtlessly spoken. It is, rather, the voicing of an obligation and a promise. Cleanliness of hands, as well as purity of heart, should be taught to the priests who officiate at the sacrament table.”

“Reverence and Morality”
April 1987 General Conference
Priesthood Session