Isaiah 65

 Isaiah speaks of the millennium = 

"...the voice of weeping shall be no more heard in her, nor the voice of crying.

20 There shall be no more thence an infant of days, nor an old man that hath not filled his days: for the child shall die an hundred years old; but the sinner being an hundred years old shall be accursed.

21 And they shall build houses, and inhabit them; and they shall plant vineyards, and eat the fruit of them.

22 They shall not build, and another inhabit; they shall not plant, and another eat: for as the days of a tree are the days of my people, and mine elect shall long enjoy the work of their hands.

23 They shall not labour in vain, nor bring forth for trouble; for they are the seed of the blessed of the Lord, and their offspring with them.

24 And it shall come to pass, that before they call, I will answer; and while they are yet speaking, I will hear.

25 The wolf and the lamb shall feed together, and the lion shall eat straw like the bullock: and dust shall be the serpent’s meat. They shall not hurt nor destroy in all my holy mountain, saith the Lord."  (Isaiah 65:19–25)

Of this, Joseph Fielding Smith commented - 

“When Christ comes the Saints who are on the earth will be quickened and caught up to meet him. This does not mean that those who are living in mortality at that time will be changed and pass through the resurrection, for mortals must remain on the earth until after the thousand years are ended. A change, nevertheless, will come over all who remain on the earth; they will be quickened so that they will not be subject unto death until they are old. Men shall die when they are one hundred years of age, and the change shall be made suddenly to the immortal state. Graves will not be made during this thousand years, and Satan shall have no power to tempt any man. Children shall grow up ‘as calves of the stall’ unto righteousness, that is, without sin or the temptations that are so prevalent today. Even the animal kingdom shall experience a great change, for the enmity of beasts shall disappear, as we have already stated, ‘and they shall not hurt nor destroy in all my holy mountain: for the earth shall be full of the knowledge of the Lord, as the waters cover the sea.’—Isaiah 11:9.” (The Way to Perfection, pages 298–99)