The Holy Bible, 1 Thessalonians 4:16-17

16 For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:

17 Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.

The Holy Bible, Revelation 20:4-6

4 And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.

5 But the rest of the dead lived not again until the thousand years were finished. This is the first resurrection.

6 Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years.

The Doctrine and Covenants, Section 29:13

13 For a trump shall sound both long and loud, even as upon Mount Sinai, and all the earth shall quake, and they shall come forth–yea, even the dead which died in me, to receive a crown of righteousness, and to be clothed upon, even as I am, to be with me, that we may be one.

The Doctrine and Covenants, Section 43:17-18

17 Hearken ye, for, behold, the great day of the Lord is nigh at hand.

18 For the day cometh that the Lord shall utter his voice out of heaven; the heavens shall shake and the earth shall tremble, and the trump of God shall sound both long and loud, and shall say to the sleeping nations: Ye saints arise and live; ye sinners stay and sleep until I shall call again.

The Doctrine and Covenants, Section 45:45-48

45 But before the arm of the Lord shall fall, an angel shall sound his trump, and the saints that have slept shall come forth to meet me in the cloud.

46 Wherefore, if ye have slept in peace blessed are you; for as you now behold me and know that I am, even so shall ye come unto me and your souls shall live, and your redemption shall be perfected; and the saints shall come forth from the four quarters of the earth.

47 Then shall the arm of the Lord fall upon the nations.

48 And then shall the Lord set his foot upon this mount, and it shall cleave in twain, and the earth shall tremble, and reel to and fro, and the heavens also shall shake.

The Doctrine and Covenants, Section 63:49

49 Yea, and blessed are the dead that die in the Lord, from henceforth, when the Lord shall come, and old things shall pass away, and all things become new, they shall rise from the dead and shall not die after, and shall receive an inheritance before the Lord, in the holy city.

The Doctrine and Covenants, Section 88:96-98

96 And the saints that are upon the earth, who are alive, shall be quickened and be caught up to meet him.

97 And they who have slept in their graves shall come forth, for their graves shall be opened; and they also shall be caught up to meet him in the midst of the pillar of heaven–

98 They are Christ’s, the first fruits, they who shall descend with him first, and they who are on the earth and in their graves, who are first caught up to meet him; and all this by the voice of the sounding of the trump of the angel of God.

History of the Church, Joseph Smith, 5:361-362

Would you think it strange if I relate what I have seen in vision in relation to this interesting theme? Those who have died in Jesus Christ may expect to enter into all that fruition of joy when they come forth, which they possessed or anticipated here. So plain was the vision, that I actually saw men, before they had ascended from the tomb, as though they were getting up slowly. They took each other by the hand and said to each other, “My father, my son, my mother, my daughter, my brother, my sister.” And when the voice calls for the dead to arise, suppose I am laid by the side of my father, what would be the first joy of my heart? To meet my father, my mother, my brother, my sister; and when they are by my side, I embrace them and they me… All your losses will be made up to you in the resurrection, provided you continue faithful. By the vision of the Almighty I have seen it. More painful to me are the thoughts of annihilation than death. If I have no expectation of seeing my father, mother, brothers, sisters and friends again, my heart would burst in a moment, and I should go down to my grave. The expectation of seeing my friends in the morning of the resurrection cheers my soul and makes me bear up against the evils of life. It is like their taking a long journey, and on their return we meet them with increased joy. God has revealed His Son from the heavens and the doctrine of the resurrection also; and we have a knowledge that those we bury here God will bring up again, clothed upon and quickened by the Spirit of the great God; and what mattereth it whether we lay them down, or we lay down with them, when we can keep them no longer? Let these truths sink down in our hearts, that we may even here begin to enjoy that which shall be in full hereafter.

Journal of Discourses, Erastus Snow, 25:5

True, we have, in our limited understandings, perhaps imagined, many of us, that this glorious resurrection was to come upon us, and upon the whole world suddenly, like the rising of the sun. But you must remember the sun does not rise the same hour and the same moment upon all the earth. It is twenty-four hours in rising and twenty-four hours in setting. So with the resurrection. There is a day appointed for the resurrection of the righteous. And it is sealed upon the heads of many that if they are faithful and true, they shall come forth “in the morning of the first resurrection;” but the morning lasts from the first hour of the day until midday, and the day lasts till night;

Journal of Discourses, Orson Pratt, 20:18

And it will come to pass, after that period, when Jesus shall have raised all the righteous from their graves, that he will descend with all the hosts of heaven accompanying him, and will stand upon the Mount of Olives, and he will go out of Jerusalem, and the Jews will go out to the mount to meet him and will acknowledge him as their Messiah and King; and then it shall come to pass, that the heathen nations will also more fully recognize him as the true and only God.