Mosiah 8:18

18 Thus God has provided a means that man, through faith, might work mighty miracles; therefore he becometh a great benefit to his fellow beings.

2 Nephi 18:18

18. Behold, I and the children whom the Lord hath given me are for signs and for wonders in Israel from the Lord of Hosts, which dwelleth in Mount Zion.

1 Nephi 17:8-10/50-51

8. And it came to pass that the Lord spake unto me, saying: Thou shalt construct a ship, after the manner which I shall show thee, that I may carry thy people across these waters.
9. And I said: Lord, whither shall I go that I may find ore to molten, that I may make tools to construct the ship after the manner which thou hast shown unto me.
10. And it came to pass that the Lord told me whither I should go to find ore, that I might make tools.

50. And I said unto them: If God had commanded me to do all things I could do them. If he should command me that I should say unto this water, be thou earth, it should be earth; and if I should say it, it would be done.
51. And now, if the Lord has such great power, and has wrought so many miracles among the children of men, how is it that he cannot instruct me, that I should build a ship?

Mark 9:22-24

22. And ofttimes it hath cast him into the fire, and into the waters, to destroy him: but if thou canst do anything, have compassion on us, and help us.
23. Jesus said unto him, If thou canst believe, all things are possible to him that believeth.
24. And straightway the father of the child cried out, and said with tears, Lord I believe; help thou mine unbelief.

Robert D. Hales (Oct 2007 Conference)

By design, most miracles are spiritual demonstrations of God's power--tender mercies gently bestowed through impressions, ideas, feelings of assurance, solutions to problems, strength to meet challenges, and comfort to bear disappointments and sorrow.

Luke 17:15-19

15. And one of them, when he saw that he was healed, turned back, and with a loud voice glorified God,
16. And fell down on his face at his feet, giving him thanks: and he was a Samaritan.
17. And Jesus answering said, Were there not ten cleansed? but where are the nine?
18. There are not found that returned to give glory to God, save this stranger.
19. And he said unto him, Arise, go thy way: thy faith hath made thee whole.

Alma 26:11-12

11. But Ammon said unto him: I do not boast in my own strength, nor in my own wisdom; but behold, my joy is full, yea, my heart is brim with joy, and I will rejoice in my God.
12. Yea, I know that I am nothing; as to my strength I am weak; therefore I will not boast of myself, but I will boast of my God, for in his strength I can do all things; yea, behold, many mighty miracles we have wrought in this land, for which we will praise his name forever.

Article of Faith 7

7. We believe in the gift of tongues, prophesy, revelation, visions, healing, interpretation of tongues, and so forth.

Mosiah 3:5-8

5. For behold, the time cometh, and is not far distant, that with power, the Lord Omnipotent who reigneth, who was, and is from all eternity to all eternity, shall come down from heaven among the children of men, and shall dwell in a tabernacle of clay, and shall go forth amongst men, working mighty miracles, such as healing the sick, raising the dead, causing the lame to walk, the blind to receive their sight, and the deaf to hear, and curing all manner of diseases.
6. And he shall cast out devils, or the evil spirits which dwell in the hearts of the children of men.
7. And lo, he shall suffer temptations, and pain of body, hunger, thirst, and fatigue, even more than man can suffer, except it be unto death; for behold, blood cometh from every pore, so great shall be his anguish for the wickedness and abominations of his people.
8. And he shall be called Jesus Christ, the Son of God, the Father of heaven and earth, the Creator of all things from the beginning; and his mother shall be called Mary.