Two types of “genuine miracles”
“First, miracles worked by the power of the priesthood are always present in the true Church of Jesus Christ. The Book of Mormon teaches that ‘God has provided a means that man, through faith, might work mighty miracles’ (Mosiah 8:18). The ‘means’ provided is priesthood power (see James 5:14–15; D&C 42:43–48), and that power works miracles through faith (see Ether 12:12; Moro. 7:37). …
“A second type of genuine miracle is the miracle worked through the power of faith, without specifically invoking the power of the priesthood. Many of these miracles occur in our Church, such as by the prayers of faithful women, and many occur outside it. As Nephi taught, God ‘manifesteth himself unto all those who believe in him, by the power of the Holy Ghost; yea, unto every nation, kindred, tongue, and people, working mighty miracles, signs, and wonders, among the children of men according to their faith’ (2 Ne. 26:13; see also 1 Ne. 7:12; James 5:15)” (“Miracles,” Ensign, June 2001, Dallin H. Oaks ).