Posted 29 May 2011 - 01:22 PM
For all living ordinances, they must be administered by one who has the keys to administer those ordinances.
That, in most cases, is the Bishop. For missionaries, it's the mission president. For temple ordinances, it's your Bishop and Stake President.
For baptism to be "valid", it must be done by one who holds the Aaronic Priesthood AND authorized to perform the ordinance by the proper priesthood leader - such as a Bishop.
If the Bishop (or other priesthood leader) allows the ordinance to be performed by one who holds the priesthood, it is valid.
Does that make sense?
Note that this is different than performing blessings for the sick and other such ordinances. I'm only talking about the "saving" ordinances - baptism, gift of the holy ghost, sacrament, priesthood ordinations and temple ordinances.
"But make no mistake about it, brothers and sisters; in the months and years ahead, events will require of each member that he or she decide whether or not he or she will follow the First Presidency. Members will find it more difficult to halt longer between two opinions (see 1 Kings 18:21). President Marion G. Romney said, many years ago, that he had "never hesitated to follow the counsel of the Authorities of the Church even though it crossed my social, professional, or political life" (CR,
April 1941, p. 123). This is a hard doctrine, but it is a particularly vital doctrine in a society which is becoming more wicked. In short, brothers and sisters, not being ashamed of the gospel of Jesus Christ includes not being ashamed of the prophets of Jesus Christ." - Neal A. Maxwell, October 10th, 1978.