Why eight, and why not as babies? The answer comes from a modern revelation and one of the most moving letters in the Book of Mormon.
Because the Lord revealed eight as the age of accountability. “Their children shall be baptized for the remission of their sins when eight years old” (D&C 68:27). Before that, children don’t need baptism: “little children are alive in Christ, even from the foundation of the world” (Moroni 8:12). The Book of Mormon calls infant baptism “solemn mockery before God” (Moroni 8:9), because babies cannot sin or repent, and Christ has already redeemed them.
The short answerThe Lord set the age
Latter-day Saint children are baptized at eight because the Lord revealed that age to Joseph Smith in 1831: “their children shall be baptized for the remission of their sins when eight years old, and receive the laying on of the hands” (D&C 68:27). Eight is called the age of accountability: the point at which a child is old enough to understand right and wrong, repent and make a covenant with God.
Before that, little children don’t need baptism at all, because they are already redeemed by Christ. The Church does not baptize infants, and the Book of Mormon explains why in some of the strongest words in all of scripture.

Moroni 8: “Little children are whole”Mormon’s letter about infant baptism
When disputes arose among the Nephites about baptizing babies, the prophet Mormon wrote to his son: “Listen to the words of Christ, your Redeemer … little children are whole, for they are not capable of committing sin; wherefore the curse of Adam is taken from them in me” (Moroni 8:8). Then: “I know that it is solemn mockery before God, that ye should baptize little children” (Moroni 8:9).
He taught that “little children need no repentance, neither baptism,” because “baptism is unto repentance.” And his logic is unanswerable: “little children are alive in Christ, even from the foundation of the world; if not so, God is a partial God, and also a changeable God, and a respecter to persons; for how many little children have died without baptism!” (Moroni 8:11–12). No grieving parent needs to fear for a baby who dies. The Doctrine and Covenants agrees: “little children are redeemed from the foundation of the world through mine Only Begotten” (D&C 29:46–47).
What the Bible showsRepent, believe, be baptized
Every baptism described in the New Testament follows faith and repentance. Peter said, “Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost” (Acts 2:38). An infant can’t repent. Jesus said of children, “Suffer little children, and forbid them not, to come unto me: for of such is the kingdom of heaven” (Matthew 19:14). He blessed them; He didn’t baptize them.
Baptism is still essential for everyone accountable: “Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God” (John 3:5). Even the sinless Christ was baptized “to fulfil all righteousness” (2 Nephi 31:5), going “up straightway out of the water” (Matthew 3:16), which is why baptism is by immersion: “buried with him by baptism” (Romans 6:4).
What happens before and at baptismParents teach, the child chooses
The Lord put the duty on parents to teach their children “the doctrine of repentance, faith in Christ the Son of the living God, and of baptism and the gift of the Holy Ghost … when eight years old,” or “the sin be upon the heads of the parents” (D&C 68:25). “No one can be received into the church of Christ unless he has arrived unto the years of accountability before God, and is capable of repentance” (D&C 20:71).
An eight-year-old is interviewed, then baptized by immersion by a priesthood holder using the words Christ gave: “Having authority given me of Jesus Christ, I baptize you in the name of the Father, and of the Son, and of the Holy Ghost. Amen” (3 Nephi 11:25–26). The child is then confirmed and receives the gift of the Holy Ghost. The covenant is the one Alma taught at the waters of Mormon: to “bear one another’s burdens,” “mourn with those that mourn,” and “stand as witnesses of God at all times” (Mosiah 18:8–10).
The first step on a covenant pathBorn again, “of water, and of the Spirit”
God told Adam, “ye must be born again into the kingdom of heaven, of water, and of the Spirit, and be cleansed by blood, even the blood of mine Only Begotten … For by the water ye keep the commandment; by the Spirit ye are justified, and by the blood ye are sanctified” (Moses 6:59–60). Baptism at eight is the first covenant on a path that leads to the temple and, in the end, to “all that my Father hath” (D&C 84:38). See What Is the Sacrament? for how that covenant is renewed every week.
Check the premiseThe presuppositions baked into the question
Before this question can be answered fairly, the person asking has to justify a few assumptions packed inside it:
- That babies who die unbaptized are lost. Moroni 8:12: “little children are alive in Christ, even from the foundation of the world.”
- That infant baptism is the historic biblical pattern. Every New Testament baptism follows faith and repentance (Acts 2:38); infants cannot repent.
- That children are born carrying Adam’s guilt. Moroni 8:8: “the curse of Adam is taken from them in me.”
- That the age of eight was arbitrary. The Lord revealed it (D&C 68:27).
FAQQuick answers
Why do Latter-day Saints baptize at 8?
The Lord revealed eight as the age of accountability: “their children shall be baptized … when eight years old” (D&C 68:27).
Do Latter-day Saints baptize babies?
No. Mormon called infant baptism “solemn mockery before God” (Moroni 8:9), because little children are redeemed by Christ.
What happens to children who die before 8?
They are saved: “little children are alive in Christ, even from the foundation of the world” (Moroni 8:12; D&C 29:46).
What is the age of accountability?
The age when a child can understand right and wrong and repent, which the Lord set at eight (D&C 68:25–27).
How are Latter-day Saints baptized?
By immersion, by one holding priesthood authority, in the name of the Father, Son and Holy Ghost (3 Nephi 11:25–26).
What did Jesus say about little children?
“Suffer little children, and forbid them not, to come unto me: for of such is the kingdom of heaven” (Matthew 19:14).
Who can perform a baptism in the Church?
A priest in the Aaronic Priesthood or an elder. D&C 20:46 says, “The priest’s duty is to preach, teach, expound, exhort, and baptize.”
What do children promise at baptism?
They make a covenant with God. Alma described baptism as “a witness before him that ye have entered into a covenant with him, that ye will serve him and keep his commandments” (Mosiah 18:10).
SummaryKey takeaways
- The Lord set eight as the age of baptism (D&C 68:27).
- Little children are redeemed by Christ and need no baptism (Moroni 8:8–12).
- Children who die before eight are saved.
- Baptism is by immersion, by authority, as Christ taught (3 Nephi 11:25–26).
Read Moroni 8; it’s one of the most comforting chapters in scripture. For quick, sourced answers, open Galatians18, and follow me on X at @TraviXai.
Sources
- King James Bible (churchofjesuschrist.org): Matthew 3:16 · Matthew 19:14 · John 3:5 · Acts 2:38 · Romans 6:4
- Book of Mormon: 2 Nephi 31:5 · Mosiah 18:8–10 · 3 Nephi 11:25–26 · Moroni 8:8–12
- Doctrine and Covenants: D&C 20:71 · D&C 29:46–47 · D&C 68:25–27
- Pearl of Great Price: Moses 6:59–60
- Featured image and in-article graphic: original graphics by thebookofmormon.ai (painterly backgrounds; no photographs or likenesses of real people).


