Sanctification is a state of saintliness, a state attained only by conformity to the laws and ordinances of the gospel. The plan of salvation is the system and means provided whereby men may sanctify their souls and thereby become worthy of a celestial inheritance. (Bruce R. McConkie, Mormon Doctrine, pp. 73, 675.)
“Now They After Being Sanctified by the Holy Ghost”
The baptism of fire is not something in addition to the receipt of the Holy Ghost; rather, it is the actual enjoyment of the gift which is offered by the laying on of hands at the time of baptism. ’Remission of sins, ’ the Lord says, comes ’by baptism and by fire, yea, even the Holy Ghost.’ (D&C 19:31; 2 Nephi 31:17.) Those who receive the baptism of fire are ’filled as if with fire’ (Helaman 5:45).“”
“Sanctified by the Holy Ghost”
The Holy Ghost is a sanctifier. The sanctified soul is one that has been baptized of water and of the Spirit. The Spirit baptism is frequently referred to in holy writ as the baptism of fire and the Holy Ghost (see Matthew 3:11; Luke 3:16; 2 Nephi 31:13-14; 3 Nephi 11:35; 3 Nephi 12:1-2; Mormon 7:10; D&C 20:41; D&C 33:11; D&C 39:6).
It is the work of the Holy Ghost to burn out of the repentant soul the dross or iniquity, carnality, sensuality, and evil in any form. The persons thus cleansed become new creatures of the Holy Ghost (see Mosiah 27:24-26). They are born again.