The Sacrament of Marriage for Time  is a Sacrament of Union performed by the Levitical Priesthood, by a Priest or Priestess.

We believe that all marriages in this Church of Christ of Latter Day Saints should be solemnized in a public meeting, or feast, prepared for that purpose.” –Doctrine of the Saints 16:2

The marriage of two person may be performed by a licensed Priest or Priestess of the Levitical Priesthood or anyone of the High Priesthood (Doctrines of the Saints 16:3). Local, State, and Federal laws must be followed. The exact verbiage may be found in Doctrines of the Saints Section 16:8-10:

You both mutually agree to be each other’s companion, husband and wife, observing the legal rights belonging to this condition; that is, keeping yourselves wholly for each other, and from all others, during your lives?”

(Those desiring to be married should both confirm “yes.”)

And when they have answered Yes, they shall pronounce them husband and wife (or husband and husband, or wife and wife) in the name of the Lord Jesus Christ, and by virtue of the laws of the country and authority vested in him:

“May God add his blessings and keep you to fulfill your covenants from henceforth and forever: Amen.”