D&C 17:3-5 I am not any longer to be entirely alone in the world

“When they returned to the house it was between three and four o’clock p. m. Mrs. Whitmer, Mr. Smith and myself, were sitting in a bedroom at the time. On coming in, Joseph threw himself down beside me, and exclaimed, ‘Father, mother, you do not know how happy I am: The Lord has now caused the plates to be shown to three more besides myself. They have seen an angel, who has testified to them, and they will have to bear witness to the truth of what I have said, for now they know for themselves, that I do not go about to deceive the people, and I feel as if I was relieved of a burden which was almost too heavy for me to bear, and it rejoices my soul, that I am not any longer to be entirely alone in the world.’ Upon this, Martin Harris came in: he seemed almost overcome with joy and testified boldly to what he had both seen and heard. And so, did David and Oliver, adding that no tongue could express the joy of their hearts, and the greatness of the things which they had both seen and heard” (History of Joseph Smith by His Mother, 152).

D&C 17:1 "They tease me so much" to be the 3 witnesses.

In June 1829 the translation of the Book of Mormon neared completion. Joseph gathered one morning with his family and friends for singing and prayer. Martin Harris was there, having come from Palmyra to see how the translation progressed. While Joseph Smith was translating the Book of Mormon, he learned that three witnesses would be permitted to see the plates (see 2 Nephi 27:12-14 Ether 5:2-4 D&C 5:11-15, 18). David Witmer, Oliver Cowdery, and Martin Harris volunteered, hoping they could be chosen. “They tease me so much”, Joseph said, “almost without intermission for some time”, that he finally asked the Lord for approval and received the exciting answer recorded in D&C 17. Joseph rose from his knees and said to Martin, “…you got to humble yourself before God this day and obtain, if possible, a forgiveness of your sins. If you would do this, it is God’s will that you and Oliver Cowdery and David Witmer should look upon the plates.”

D&C 11:8 You have an important work to do.

“…the Lord sees in you… the potential of a valiant servant with an important work to do and with a testimony to share. There is service that no one else can give in quite the same way.” (Oct. 2016, Pres. Uchtdorf)

“Our Heavenly Father has reserved many of His most noble spirits—perhaps, I might say, His finest team—for this final phase. Those noble spirits—those finest players, those heroes—are you!” (President Nelson, 2018 Youth Devotional)

D&C 9:7-11 Oliver was not ready to translate. "Wait while I get ready."

President Howard W. Hunter:

Oliver was not as ready as he might have been—or as he once had been. His belief in himself and in this great latter-day work had faltered just a bit, and he cried out, “Wait while I get ready.” But he learned that eternal work can seldom wait for long. The Lord eventually replied to him, “Because … you did not continue as you commenced, … I have taken away this privilege. … You feared, and the time is past, and it is not expedient now” (D&C 9:5, 11) (New Era, May 2002).

D&C 2:1-3 The whole earth would be wasted if we don't turn our hearts to our fathers

President Nelson

"Eternal life, made possible by the Atonement, is the supreme purpose of the Creation. To phrase that statement in its negative form, if families were not sealed in holy temples, the whole earth would be utterly wasted." Joseph's role as Prophet of the Restoration was to begin a work that you and I have been sent to do—that is to "invite all of God's children on both sides of the veil to come unto their Savior, receive the blessings of the holy temple, have enduring joy, and qualify for eternal life."

Two missionaries visit Mr. Pollard. First Vision testimony

the following experience is about two missionaries in Canada, as reported by President Thomas S. Monson

“Two [missionaries] called at the home of Mr. Elmer Pollard. … They presented their message and asked if he would join in prayer. He agreed, on the provision that he could offer the prayer.

“The prayer he offered astonished the missionaries. He said, ‘Heavenly Father, bless these two unfortunate, misguided missionaries, that they may return to their homes and not waste their time telling the people of Canada about a message which is so fantastic and about which they know so little.’

“As they arose from their knees, Mr. Pollard asked the missionaries never to return to his home. As they left, he said mockingly to them, ‘You can’t tell me you really believe that Joseph Smith was a prophet of God, anyway!’ and he slammed the door” (“The Prophet Joseph Smith: Teacher by Example,” Ensign or Liahona, Nov. 2005, 69).

The two returned to Mr. Pollard’s door. Mr. Pollard answered the knock and angrily said, ‘I thought I told you young men never to return!’

“The junior companion then said, with all the courage he could muster, ‘Mr. Pollard, when we left your door, you said that we didn’t really believe Joseph Smith was a prophet of God. I want to testify to you, Mr. Pollard, that I know Joseph Smith was a prophet of God, that by inspiration he translated the sacred record known as the Book of Mormon, that he did see God the Father and Jesus the Son.’ The missionaries then departed the doorstep.

“[Mr. Pollard later testified:] ‘That evening, sleep would not come. I tossed and turned. Over and over in my mind I heard the words, “Joseph Smith was a prophet of God. I know it. … I know it. … I know it.” I could scarcely wait for morning to come. I telephoned the missionaries. … They returned, and this time my wife, my family, and I joined in the discussion as earnest seekers of truth. As a result, we have all embraced the gospel of Jesus Christ’” (“The Prophet Joseph Smith: Teacher by Example,” 69).