[2] The Church of Jesus Christ of Latter-day Saints teaches that these two ordinances are necessary for all mankind, so they perform both baptisms and confirmations by proxy on behalf of the dead in their temples.
[1] Latter Day Saints believe that a person who has received the gift of the Holy Ghost will lose the benefit of its promptings if they commit a major sin (until they repent) or if they exercise "compulsion upon the souls of the children of men, in any degree of unrighteousness".
[1] Receiving the Holy Ghost includes inviting him into one's daily life as a "constant companion", which is believed to give strength, guidance, and enlightenment.
Latter Day Saints believe that the performance of the ordinance alone is not enough to insure actual reception of the Spirit but depends on the humility, faith, and worthiness of the individual.
[1] The ordinance is usually performed during a baptismal service or a fast and testimony meeting in the following manner: One or more bearers of the Melchizedek Priesthood lay their hands on the head of the newly baptized person, and the one who is "voice," calling the person by name, says words to this effect: "In the name of Jesus Christ, and by the authority of the holy Melchizedek Priesthood, I confirm you a member of The Church of Jesus Christ of Latter-day Saints and say unto you, 'receive the Holy Ghost.'"