As soon as the dispensation of the fullness of times was opened, the saints have been privileged to witness these signs. After the many miracles which attended the coming forth of the Book of Mormon, a public miracle was performed by Joseph Smith in April of 1830. Newel Knight had been overcome by an evil spirit. Joseph was called to help:
"I went and found him suffering very much in his mind, and his body acted upon in a very strange manner; his visage and limbs distorted and twisted in every shape and appearance possible to imagine; and finally he was caught up off the floor of the apartment, and tossed about most fearfully.
"His situation was soon made known to his neighbors and relatives, and in a short time as many as eight or nine grown persons had got together to witness the scene. After he had thus suffered for a time, I succeeded in getting hold of him by the hand, when almost immediately he spoke to me, and with great earnestness requested me to cast the devil out of him, saying that he knew he was in him, and that he also knew that I could cast him out.
"I replied, ’If you know that I can, it shall be done;’ and then almost unconsciously I rebuked the devil, and commanded him in the name of Jesus Christ to depart from him; when immediately Newel spoke out and said that he saw the devil leave him and vanish from his sight. This was the first miracle which was done in the Church, or by any member of it; and it was done not by man, nor by the power of man, but it was done by God, and by the power of godliness; therefore, let the honor and the praise, the dominion and the glory, be ascribed to the Father, Son, and Holy Spirit, for ever and ever. Amen.
“This scene was now entirely changed, for as soon as the devil had departed from our friend, his countenance became natural, his distortions of body ceased, and almost immediately the Spirit of the Lord descended upon him, and the visions of eternity were opened to his view…All this was witnessed by many, to their great astonishment and satisfaction, when they saw the devil thus cast out, and the power of God, and His Holy Spirit thus made manifest.” (History of the Church, vol. 1, pp. 82-3)
Joseph explained that this was the first miracle performed since the Church was organized. Since then, the miracles have continued, almost daily. Some have been more dramatic than others, but they have continued to the present and will continue as long as the saints shall exercise sufficient faith.
Bruce R. McConkie
“In this Church of Jesus Christ of Latter-day Saints we worship a God of miracles who has given us the same gifts enjoyed by the ancients. We do not boast, yet it is no secret that among the faithful the blind see, the deaf hear, the lame walk, and the dead are raised.” (Conference Report, Nov. 1979 Ensign, “The Mystery of Mormonism”)
Harold B. Lee
"President McKay, I have been a personal witness in these last six months that, as the apostles of old found, we are finding today that the servants of the Living God are going forth, the Lord is working with them confirming the work, with the same signs following.
"I bear personal witness that the gift of tongues to a whole congregation, which I witnessed, as in the day of Pentecost, was observed down in one of the Latin American Missions, by which this congregation understood what was said, although what was being spoken to them was in a strange tongue. I have witnessed the healing of an impotent and crippled child from birth in the Brazilian Mission. I have witnessed the healing of a blind child in the Central American Mission.
“And so, enumerating all of these, more important than any of these signs, I have witnessed the reformation in the personal lives of individuals who accept the gospel and are true to its principles, which results from a true conversion to the gospel of Jesus Christ. I bear you my solemn witness to the onrolling of the work of the Lord. The work is awakening everywhere.” (Conference Report, Apr. 1960, p. 109)
Rudger Clawson
“I have a son now in the mission field, a boy about twenty years of age, who went forth with a limited knowledge of the Gospel, with fear and trembling, not knowing what he would say, not knowing what he would do, but, nevertheless, trusting in the Lord. Within a few days, I received a letter from him, and he relates to me a very remarkable healing--I say it was remarkable, and yet it was such an incident as often occurs in the mission field. He said that he and his companions were visiting with a friend, when a little girl came rushing into the house and asked the elders to go immediately to her home and bless a little child that was afflicted--a child of non-Mormon parents. The elders responded. When they reached the place they found the little one stricken down with bronchial pneumonia. There was the mark of terrible fever in its eyes, and it was at the point of death; in fact, the death-rattle was in its throat, and the mother was bending over the child expecting every moment to see its spirit depart for the spirit world. The two elders took the child in their arms and anointed it with oil, and blessed it, and rebuked the disease. Relief came instantly; the child rested and was comfortable through the night; and when the elders came to inquire the next day they found the little one seated at the table, eating an orange, and fully recovered. My son goes on to say--and this is the point I desire to emphasize—’Father, I laid my hands, with my companion, upon that child, and I saw it healed I know that this could have been done only by the power of God. My faith has been strengthened; and this is a testimony to me of the truth of the Gospel;’ and he adds, ’I would not give it for millions of money.’” (Conference Report, Apr. 1909, p. 94)