Jared comes down from the Tower of Babel--Jared asks his brother to ask God what will become of them--God promises
to lead Jared and his people to a land that is better than any other place on earth. (ca. 2200 BCE)
1 And now I, Moroni, proceed to give an account of those
ancient inhabitants who were destroyed by the hand
of the Lord upon the face of this north country.
I, Moroni, am going to tell you about the ancient inhabitants of the "north country" who were
killed by God. 
2 And I take mine account from the twenty and four plates which
were found by the people of Limhi, which is called the Book of Ether.
My source is the set of 24 plates which were found by the people of Limhi, which is called the Book of Ether.
3 And as I suppose that the first part of this record, which speaks concerning the creation of the world,
and also of Adam, and an account from that time even to the great tower, and whatsoever things transpired among the children
of men until that time, is had among the Jews --
The first part is about the creation of the world, and the story from Adam to the Tower of Babel.
4 Therefore I do not write those things which transpired from the days of Adam until that
time; but they are had upon the plates; and whoso findeth them, the same will have power that he may get the full account.
The Jews have that part, so I'm going to skip it. 
5 But behold,
I give not the full account, but a part of the account I give, from the tower down until they were
I'll tell the story from the Tower of Babel until they were destroyed. 
6 And on this wise do I give the account. He that wrote this
record was Ether, and he was a descendant of Coriantor.
The author of the 24 plates is Ether, and this is his genealogy. 
7 Coriantor was the son of Moron.
8 And Moron was the son of Ethem.
9 And Ethem was the son of Ahah.
10 And Ahah was the son of Seth.
11 And Seth was the son of Shiblon.
12 And Shiblon was the son of Com.
13 And Com was the son of Coriantum.
14 And Coriantum was the son of Amnigaddah.
15 And Amnigaddah was the son of Aaron.
16 And Aaron was a descendant of Heth, who was the son of Hearthom.
17 And Hearthom was the son of Lib.
18 And Lib was the son of Kish.
19 And Kish was the son of Corom.
20 And Corom was the son of Levi.
21 And Levi was the son of Kim.
22 And Kim was the son of Morianton.
23 And Morianton was a descendant of Riplakish.
24 And Riplakish was the son of Shez.
25 And Shez was the son of Heth.
26 And Heth was the son of Com.
27 And Com was the son of Coriantum.
28 And Coriantum was the son of Emer.
29 And Emer was the son of Omer.
30 And Omer was the son of Shule.
31 And Shule was the son of Kib.
32 And Kib was the son of Orihah, who was the son of Jared;
Coriantor was the son of Moron. 
The Jaredites' language is not confounded
33 Which Jared came forth with his brother and their families,
with some others and their families, from the great tower, at the time the Lord confounded the
language of the people, and swore in his wrath that they should
be scattered upon all the face of the earth; and according to the word of the Lord the people were scattered.
The Jaredites were Israelites who lived at the time of the Tower of Babel. 
34 And the brother of Jared being a large and mighty man, and a man
highly favored of the Lord, Jared,
his brother, said unto him: Cry unto the Lord, that he will not confound us that we may not understand our words.
35 And it came to pass that
the brother of Jared did cry unto the Lord, and the Lord had compassion upon Jared;
therefore he did not confound the language of Jared; and Jared and his brother were not confounded.
The brother of Jared  was a large, mighty (but apparently nameless) man who
was "highly favored of the Lord."
Jared said to his brother,
Cry to the Lord so that he won't confound our language so we can still understand each other.
So the brother of Jared cried to the Lord, and the Lord didn't confound the language between them.
36 Then Jared said unto his brother:
Cry again unto the Lord, and it may be that he will turn away his
anger from them who are our friends, that he confound not their language.
37 And it came to pass that
the brother of Jared did cry unto the Lord, and the Lord had compassion upon
their friends and their families also, that they were not confounded.
Then Jared said to his brother,
Cry again to the Lord, and ask him not to confound the language of our friends.
So the brother of Jared cried to the Lord, and the Lord didn't confound the language of their friends
The Jaredites' seed will become the greatest nation on earth
38 And it came to pass that Jared spake again unto his brother, saying:
Go and inquire of the Lord whether he will drive us out of the land, and if
he will drive us out of the land, cry unto him whither we shall go. And who knoweth but the Lord
will carry us forth into a land which is choice above all the earth? And if it so be, let us be
faithful unto the Lord, that we may receive it for our inheritance.
Jared asked his brother to ask God what God will do with them. "Who knows?," Jared said,
"maybe God will carry us to a land that better than any other land in the whole world."
39 And it came to pass that the brother of Jared did cry unto
the Lord according to that which had been spoken by the mouth of Jared.
40 And it came to pass that the Lord did hear the brother of Jared,
and had compassion upon him, and said unto him:
So Jared's brother cried to the Lord,
and the Lord heard him, and said to him,
41 Go to and gather together thy flocks, both male and female, of every kind; and also of the seed of
the earth of every kind; and thy families; and also Jared thy brother and his family; and also thy friends and their
families, and the friends of Jared and their families.
42 And when thou hast done this thou shalt go at the head of them down into the valley which is northward.
And there will I meet thee, and I will go before thee into a land which is choice above all the lands of the earth.
43 And there will I bless thee and thy seed, and raise up unto me of thy seed, and of the seed of thy brother,
and they who shall go with thee, a great nation. And there shall be none greater than the nation which I will
raise up unto me of thy seed, upon all the face of the earth. And thus I will do unto thee because this long time ye have cried unto me.
Go get a male and female from each of your flocks and every kind of plant seed that exists on earth.
Then gather all your friends and families, and meet me in the valley to the north.
I'll lead you to a land that is better than any other land on earth.
I'll bless you and your seed and your brother's seed and make a great nation out of all that seed, the greatest
nation on earth.
I'll raise your seed up to me on the face of the earth.
I'm doing all this because you cried to me for a long time.
- Those ancient inhabitants who were destroyed by the hand of the Lord upon
the face of this north country. (v.1)
Spoiler alert: All of the Jaredites were killed (by God according to this verse) in the last
chapter of this book (Ether 15:1-2). That included more than 2 million men, not counting
women and children. Only their king, Coriantumr, survived.
Apparently they lived in the north country. (They were the first Canadians.)
- The twenty and four plates (v.2)
In the book of Alma (37:21), 24 mysterious plates were discovered that
told of the secret and dark works of a wicked and abominable people. Those plates were the book of Ether.
- The first part ... is had among the Jews (v.3)
See the first eleven chapters of Genesis for the missing part of the book of Ether.
- From the tower down until they were destroyed. (v.5)
The Book of Ether is the only book in the Book of Mormon that the LDS church doesn't even try to date. All of the other
books have (or had, they backed off a bit on dates recently) more or less exact dates for the events in the Book of Mormon.
best the LDS church can do is to say that the book of Ether begins around 2200 BCE (at the supposed time of the
Tower of Babel) and ends with Coriantumr, who lived somwhere between 500 and 250 BCE -- a span of nearly 2000 years.
Here's a timeline
that the LDS church used to use but has since taken down.
Archbishop James Ussher
figured the Tower of Babel episode happened in 2242 BCE.
- Ether ... was a descendant of Coriantor. (v.6)
Moroni skips the creation, the story about Adam and Eve, the Flood of Noah, etc., but he isn't going to skip the genealogy.
This is, after all, the Book of Mormon. And Mormons love their genealogies. (Unlike the authors of 1 Timothy
and Titus, who told us to avoid them.)
There are 29 generations between Jared and Ether, which spans around 1800 years, giving a mean
generation time of 62 years. I guess people lived longer back then.
- Coriantor was the son of Moron. (v.7)
Yes, Virginia, there is a Moron in the Book of Mormon. He was Ether's grandfather.
- At the time the Lord confounded the language of the people (v.33)
- The brother of Jared (v.34)
Although the brother of Jared was nameless in the Book of Mormon, he was later given the name
Mahonri Moriancumer by Joseph Smith.
With a name like that I can see why he was called "the brother of Jared"!