There is an implication here that ministers of other religions are also prophets, or charlatans. If they truly teach what they know through the Spirit, they are prophets. - fairy/Dragon

And these signs shall follow them that believe--in my name shall they cast out devils; they shall speak with new tongues; they shall take up serpents; and if they drink any deadly thing it shall not hurt them; they shall lay hands on the sick and they shall recover;
25 And whosoever shall believe in my name, doubting nothing, unto him will I confirm all my words, even unto the ends of the earth. - Morm. 9:24

And John answered him, saying, Master, we saw one casting out devils in thy name, and he followeth not us: and we forbad him, because he followeth not us.
39 But Jesus said, Forbid him not: for there is no man which shall do a miracle in my name, that can lightly speak evil of me.
40 For he that is not against us is on our part. - Mark9:38-40

No matter who believeth, these signs, such as healing the sick, casting our devils, etc., should follow all that believe, whether male or female. He asked the (Relief) Society if they could not see by this sweeping promise, that wherein they are ordained, if it is the privilege of those set apart to administer in that authority, which is conferred on them; and if the sisters should have faith to heal the sick, let all hold their tongues, and let everything roll on...Respecting females administering for the healing of the sick he further remarked, there could be no evil in it, if God gave His sanction by healing; that there could be no more sin in any female laying hands on and praying for the sick, than in wetting the face with water; it is no sin for anybody to administer that has faith, or if the sick have faith to be healed by their administration. - Teachings of the Prophet Joseph Smith, Section Four 1839-42, p.224

Gifts of the Spirit - We believe in the gift of the Holy Ghost being enjoyed now, as much as it was in the Apostles' days; we believe that it [the gift of the Holy Ghost] is necessary to make and to organize the Priesthood, that no man can be called to fill any office in the ministry without it; we also believe in prophecy, in tongues, in visions, and in revelations, in gifts, and in healings; and that these things cannot be enjoyed without the gift of the Holy Ghost." - Teachings of the prophet Joseph Smith, Section Five 1842-43, p.243