During the priesthood session of the October 1987 general conference, President Gordon B. Hinckley, then first counselor in the First Presidency, spoke of the growing level of profanity among young people — including young members of the Church.
"I do not hesitate to say that it is wrong, seriously wrong, for any young man ordained to the priesthood of God to be guilty of such. The taking of the Lord's name in vain is a most serious matter.
"If you have the habit, how do you break it? You begin by making a decision to change. The next time you are prone to use words you know to be wrong, simply stop. Keep quiet or say what you have to say in a different way. As you practice such restraint, it will become easy.
"Most of you boys who are here tonight are prospective missionaries. It is as wrong for you to use foul language as it would be for a missionary because you also hold the priesthood. You have authority to act in the name of God. Remember that it is the same voice which prays to the Lord on the one hand and which, on the other hand, when in the company of friends, may be inclined to speak language foul and filthy. The two kinds of voices are incompatible."