Taking the Name of God in Vain

"Thou shalt not take the name of the Lord thy God in vain; for the Lord will not hold him guiltless that taketh his name in vain." (Exodus 20:1)

"Wherefore, let all men beware how they take my name in their lips—For behold, verily I say, that many there be who are under this condemnation, who use the name of the Lord, and use it in vain, having not authority." (D&C 63:61-62)

"And the Spirit shall be given unto you by the prayer of faith; and if ye receive not the Spirit ye shall not teach." (D&C 42:14)

"...has the day of miracles ceased?  Or have angels ceased to appear unto the children of men? Or has he withheld the power of the Holy Ghost from them? Or will he, so long as time shall last, or the earth shall stand, or there shall be one man upon the face thereof to be saved? Behold I say unto you, Nay; for it is by faith that miracles are wrought; and it is by faith that angels appear and minister unto men; wherefore, if these things have ceased wo be unto the children of men, for it is because of unbelief, and all is vain." (Moroni 7:35-37)

"...when we undertake to cover our sins, or to gratify our pride, our vain ambition, or to exercise control or dominion or compulsion upon the souls of the children of men, in any degree of unrighteousness, behold, the heavens withdraw themselves; the Spirit of the Lord is grieved; and when it is withdrawn, Amen to the priesthood or the authority of that man. No power or influence can or ought to be maintained by virtue of the priesthood, only by persuasion, by long-suffering, by gentleness and meekness, and by love unfeigned; By kindness, and pure knowledge, which shall greatly enlarge the soul without hypocrisy, and without guile..." (D&C 121:37, 40-42)

"Joseph, at this time, rebuked the Elders for administering the form without the power. Said he, 'Let the Elders either obtain the power of God to heal the sick, or let them cease to administer the form without the power.'" (Autobiography of Joseph Bates Noble)

“It is in vain for persons to fancy to themselves that they are heirs with those, or can be heirs with them, who have offered their all in sacrifice, and by this means obtained faith in God and favor with him so as to obtain eternal life, unless they in like manner offer unto him the same sacrifice and through that offering obtain the knowledge that they are accepted of him (Lectures on Faith, Lecture 6)

Note also whoredoms are a form without power.  It is a false form of marriage, no fruit is borne.