What's happening
This is the founding charter of the Church — its constitution, its first handbook, and the document that the earliest Saints actually voted to accept as the rule of their common life. If Section 19 was the Lord steadying one frightened man, Section 20 is the Lord handing a newborn church its operating instructions.
To see what it is, you have to follow how it was built, because it did not arrive all at once. Back in June 1829, while the translation was finishing, Joseph and Oliver and David Whitmer had prayed for instruction on how to build up the church that was coming, and the answer (Section 18) had told Oliver to rely upon the things which are written, for in them are all things written concerning the foundation of my church. Taking that literally, Oliver Cowdery sat down and drafted a short document he called the Articles of the Church of Christ — a compilation, stitched almost entirely out of the Book of Mormon he had just copied, of the plain instructions on baptism, the sacrament, and the ordaining of priests and teachers. That 1829 draft was the seed. Over the following months, with Joseph, it grew into the fuller text we now call the Articles and Covenants, finished around the time the Church was organized on April 6, 1830. Roughly a fifth of the final section still rests directly on Book of Mormon language; the rest unfolds it.
Then it was put to a vote. On June 9, 1830, at the first conference of the Church after its organization, the minutes record that the Articles and Covenants were read by Joseph Smith jr. and received by unanimous voice of the whole congregation. That detail matters. This was not a text imposed from above and filed away. It was read aloud to the gathered believers — most of the male members of the whole Church at that point, a number small enough to fit in a farmhouse — and they raised their hands to live by it. It became the first thing a new branch of the Church was handed: how to baptize, how to bless the sacrament, who does what, how often to meet, how to keep the records. For years it was the most-copied, most-circulated revelation in the Church, precisely because every new congregation needed it.
So the section reads like what it is: a constitution. It opens with a preamble that tells the story of where this church came from and why anyone should trust it (vv. 1–16). It states a creed — a compact summary of what the Church believes about God, the Fall, and the Atonement (vv. 17–36). It lays out the ordinances, baptism and the sacrament, in the exact words to be used (vv. 37, 72–79). It defines the offices and their duties (vv. 38–67). And it sets up the machinery of membership and record-keeping (vv. 68–84). It is, in the best sense, an ordinary document — and folded inside it are some of the most-repeated sacred words in all of Latter-day Saint life.
The rise of the Church (verses 1–16)
The rise of the Church of Christ in these last days, being one thousand eight hundred and thirty years since the coming of our Lord and Savior Jesus Christ in the flesh, it being regularly organized and established agreeable to the laws of our country, by the will and commandments of God, in the fourth month, and on the sixth day of the month which is called April— — D&C 20:1
The first sentence does two things at once, and the doubleness is the point. The Church was organized agreeable to the laws of our country — Joseph took care to incorporate it legally, like any other religious society in New York — and by the will and commandments of God. It is a real institution in the real world, filing its paperwork, and it is the kingdom of God breaking into history. The preamble refuses to choose between the two.
It then introduces Joseph and Oliver not by their fame but by their office: Joseph as the first elder and Oliver as the second elder, each called of God, and ordained an apostle of Jesus Christ (vv. 2–3). And immediately it tells the story behind them — the remission of sins, the entanglement again in the vanities of the world, the repentance, and then God ministered unto him by an holy angel, whose countenance was as lightning, and whose garments were pure and white above all other whiteness (vv. 5–6). The constitution begins with a confession of weakness. Before it lists a single duty, it admits that its first elder stumbled and was lifted up by grace. That sets the tone for everything after: this is a church of forgiven people, not finished ones.
The preamble closes with the elders standing as witnesses — we, the elders of the church, have heard and bear witness to the words of the glorious Majesty on high (v. 16) — and with a sober promise: by them shall the world be judged (v. 13). The same Book of Mormon that proves the holy scriptures are true (v. 11) becomes, for those who meet it, a thing they will answer for.
What this Church believes (verses 17–28)
Then the document does something the Restoration rarely does: it states a creed. The Church that would later resist being pinned to formal creeds wrote one here, in its very first charter — but notice its shape.
By these things we know that there is a God in heaven, who is infinite and eternal, from everlasting to everlasting the same unchangeable God, the framer of heaven and earth, and all things which are in them; And that he created man, male and female, after his own image and in his own likeness... — D&C 20:17–18
In a few verses it moves through the whole arc: there is one true God; He made humanity, male and female, in His image; by transgression man became sensual and devilish, and became fallen man (v. 20); and so the Almighty God gave his Only Begotten Son (v. 21), who suffered temptations but gave no heed unto them, was crucified, died, and rose again the third day, and ascended into heaven, to sit down on the right hand of the Father (vv. 22–24). It is the gospel in miniature — Fall and Atonement, cross and empty tomb — and it is built out of the Book of Mormon's own teaching. What is striking is how catholic it is, in the old sense: it reaches back to claim all those from the beginning, even as many as were before he came, who believed in the words of the holy prophets (v. 26). The Church being organized in 1830 declares in its founding creed that it is not new — it is the same faith the ancient prophets held, now restored.
Justification and sanctification by grace (verses 29–34)
Here the constitution says something that surprises many readers who expect Latter-day Saint scripture to lean only on works.
And we know that justification through the grace of our Lord and Savior Jesus Christ is just and true; And we know also, that sanctification through the grace of our Lord and Savior Jesus Christ is just and true, to all those who love and serve God with all their mights, minds, and strength. — D&C 20:30–31
These are the two great words of the Reformation, justification and sanctification, and the Church's first document affirms both, and grounds both in grace. Justification is being accounted righteous before God — set right with Him — and the section says it comes through the grace of Christ. Sanctification is the slower work of actually being made holy, and that too is through the grace of Christ, received by those who love and serve God with everything they have. The Restoration is sometimes caricatured as having no doctrine of grace; verse 30 is the plain refutation, written in the founding month.
But the section will not let grace become presumption. It adds, with bracing honesty, there is a possibility that man may fall from grace and depart from the living God (v. 32) — and then, lest anyone think themselves safe, let those who are sanctified take heed also (v. 34). Grace is real and it is free, and it can still be walked away from. The balance is exact: salvation is God's gift, never earned; and the gift can be refused, even late.
The ordinances, in the exact words (verses 37, 72–79)
A constitution does not just describe; it prescribes. And the most precious thing this one prescribes is a set of words — the words said at baptism and at the sacrament table, written down here so that they would be the same in every branch.
For baptism, the section gives the mode (immersion) and the prayer itself: Having been commissioned of Jesus Christ, I baptize you in the name of the Father, and of the Son, and of the Holy Ghost. Amen (v. 73). And then it gives the sacramental prayers, kneeling, over the bread and over the wine:
O God, the Eternal Father, we ask thee in the name of thy Son, Jesus Christ, to bless and sanctify this bread to the souls of all those who partake of it, that they may eat in remembrance of the body of thy Son, and witness unto thee, O God, the Eternal Father, that they are willing to take upon them the name of thy Son, and always remember him and keep his commandments which he has given them; that they may always have his Spirit to be with them. Amen. — D&C 20:77
Any Latter-day Saint reading that verse hears it not as text but as a voice — the prayer they have heard knelt over a sacrament table every Sunday of their lives. It comes, nearly word for word, from the Book of Mormon (Moroni 4–5), where the resurrected Christ's church used the same prayers; and the Book of Mormon drew the heart of it from the Lord's own words at the Last Supper, this do in remembrance of me (Luke 22:19). When the Church wrote its constitution, the single most repeated sentence it would ever produce turned out to be a prayer, and the burden of that prayer is memory: that they may always remember him. The whole machinery of the Church — offices, conferences, records — exists to keep a people gathered around a table where they promise, every week, not to forget.
The body and its officers (verses 38–67)
Between the creed and the records, the section does the unglamorous work every institution must: it defines who does what. An elder (an apostle is an elder, v. 38) baptizes, ordains, confirms, administers the sacrament, and takes the lead of meetings. A priest preaches, baptizes, administers the sacrament, and visit[s] the house of each member (v. 47). A teacher is to watch over the church always, to see that there is no iniquity in the church, neither hardness with each other, neither lying, backbiting, nor evil speaking (vv. 53–54). A deacon assists. Teachers and deacons may not baptize or administer the sacrament, but they warn, expound, exhort, and teach, and invite all to come unto Christ (v. 59).
It is worth pausing on how pastoral these duties are. The teacher's charge is not administrative; it is to keep a small community from turning on itself — to watch for the hardness with each other and backbiting that quietly kills a congregation. Even the bare organizational verses carry the gospel's grain: every officer is ordained by the power of the Holy Ghost, which is in the one who ordains him (v. 60), and no one is ordained in an established branch without the vote of that church (v. 65). Authority flows from heaven, and it is also ratified by the common consent of the people. (A few verses — the references to high priests, high councilors, and a president of the high priesthood, vv. 65–67 — were added a little later as those offices came into being; the document grew as the Church did.)
How the section is built
The architecture is the architecture of a founding charter, and it moves outward from identity to action to order. First the preamble (vv. 1–16): who we are and how we got here, told as testimony. Then the creed (vv. 17–36): what we believe — God, the Fall, the Atonement, grace. Then the ordinances (vv. 37, 72–79): the covenant acts, written in their exact words. Then the offices (vv. 38–67): who carries the work. Then the membership and records (vv. 68–84): how people come in, how children are blessed, how the names are kept and, when necessary, blotted out (v. 83).
Read straight through, it has the feel of a community talking itself into existence — first remembering its story, then confessing its faith, then agreeing on how it will actually live together. And the order is not accidental: doctrine before duty, the Atonement before the administrative. The Church is told who its Savior is and what He did before it is told a single thing it must do. By the time the duties arrive, they read less like rules and more like the natural shape of a people who have just confessed that Christ was crucified, died, and rose again for them.
How this sits in the documentary record
Section 20 is unusually well documented because it was a working document — copied, circulated, read aloud, and revised as the Church grew. We can trace it from Oliver's 1829 draft to the conference floor in 1830.
Where this lands
It would be easy to read Section 20 as the least devotional thing in the Doctrine and Covenants — a bylaws document, all offices and certificates and quarterly conferences. But sit with what it actually contains. It is the place where the words said over the water and the bread were first written down for the whole Church, and those words are not administrative at all. They are a promise to take upon them the name of thy Son, and always remember him, answered by a promise from heaven that they may always have his Spirit to be with them. A constitution that could have been only structure turns out to be built around a weekly act of remembrance.
That is the genius of the thing. The Church got its skeleton — elders and priests, conferences and records, the machinery any lasting body needs — but the skeleton was wrapped around a heart, and the heart is the sacrament table. Everything organizational in Section 20 exists to keep a people coming back to that table, kneeling, remembering. The Lord could have given a list of rules. He gave instead a church whose first law is to gather often and not forget Him. Read the offices and the records with that in view, and even the line about names blotted out of the general church record becomes tender: a community keeping careful track of who belongs to it, because it intends to lose no one it can hold.