The King Follett Sermon, Published in May 1971 Ensign: ¹“>https://www.churchofjesuschrist.org/study/ensign/1971/05/the-king-follett-sermon?lang=eng))

A question may be asked—“Will mothers have their children in eternity?” Yes! Yes! Mothers, you shall have your children; for they shall have eternal life, for their debt is paid. There is no damnation awaiting them for they are in the spirit. But as the child dies, so shall it rise from the dead, and be for ever living in the learning of God. It will never grow [in the grave]; it will still be the child, in the same precise form [when it rises] as it appeared before it died out of its mother’s arms, but possessing all the intelligence of a God. …

I will leave this subject here, and make a few remarks on the subject of baptism. The baptism of water, without the baptism of fire and the Holy Ghost attending it, is of no use; they are necessarily and inseparably connected. An individual must be born of water and the spirit in order to get into the kingdom of God. In the German, the text bears me out the same as the revelations which I have given and taught for the past fourteen years on that subject. I have the testimony to put in their teeth. My testimony has been true all the time. You will find it in the declaration of John the Baptist. (Reads from the German.) John says, “I baptize you with water, but when Jesus comes, who has the power (or keys) He shall administer the baptism of fire and the Holy Ghost.” Great God! Where is now all the sectarian world? And if this testimony is true, they are all damned as clearly as anathema can do it. I know the text is true. I call upon all you Germans who know that it is true to say, Eye. (Loud shouts of “Aye.”)

Original discourse, 7 April 1844, as Reported by Times and Seasons: ²

A question may be asked—”Will mothers have their children in eternity?” Yes! Yes! Mothers, you shall have your children; for they shall have eternal life, for their debt is paid. There is no damnation awaiting them for they are in the spirit. But as the child dies, so shall it rise from the dead, and be for ever living in the learning of God. It will never grow; it will still be the child, in the same precise form as it appeared before it died out of its mother’s arms, but possessing all the intelligence of a God. Children dwell in the mansions of glory and exercise power, but appear in the same form as when on earth. Eternity is full of thrones, upon which dwell thousands of children, reigning on thrones of glory, with not one cubit added to their stature. 

I will leave this subject here, and make a few remarks on the subject of baptism. The baptism of water, without the baptism of fire and the Holy Ghost attending it, is of no use; they are necessarily inseparably connected. An individual must be born of water and the spirit in order to get into the kingdom of God. In the German, the text bears me out the same as the revelations which I have given and taught for the past fourteen years on that subject. I have the testimony to put in their teeth. My testimony has been true all the time. You will find it in the declaration of John the Baptist. (Reads from the German.) John says, “I baptize you with water, but when Jesus comes, who has the power (or keys) He shall administer the baptism of fire and the Holy Ghost.” Great God! Where is now all the sectarian world? And if this testimony is true, they are all damned as clearly as anathema can do it. I know the text is true. I call upon all you Germans who know that it is true to say, Eye. (Loud shouts of “Aye.”)

Additional Resource:

The King Follett Discourse, textual history and criticism, Van Hale: 

https://www.sunstonemagazine.com/wp-content/uploads/sbi/articles/041-04-12.pdf