It is claimed by many within the LDS Church that special literary patterns found in Hebrew writing are also found in the Book of Mormon, which they feel helps prove that book comes from ancient Jewish origins and not from Joseph Smith's mind.
The most commonly referenced pattern is a type of parallelism, called a chiasm. This structure is typically symmetrical in nature so that ideas at the beginning of the pattern are repeated at the end of the pattern.
It is thought that those relying on oral recitation could benefit from this structure to help them remember what they were to say.
A simple chiasm found in Isaiah 6:10 of the Old Testament:
A Make the heart of this people fat,
B and make their ears heavy,
C and shut their eyes;
C1 lest they see with their eyes,
B1 and hear with their ears,
A1 and understand with their heart, and convert [return], and be healed.
An example from Mosiah 3:18-19 of the Book of Mormon:
A they humble themselves
B and become as little children,
C and believe that salvation . is . in and through the atoning blood of Christ, the Lord Omnipotent.
D For the natural man
E is an enemy to God,
F and has been from the fall of Adam,
F1 and will be, forever and ever,
E1 unless he yields to the enticings of the Holy Spirit,
D1 And putteth off the natural man
C1 and becometh a saint through the atonement of Christ the Lord,
B1 and becometh as a child,
A1 submissive, meek, humble . full of love. .
Chiasms are found in other books as well. Such as in the Qur'an (2:255):
A God - there is no deity except Him, the Ever-Living, the Sustainer of existence
B Neither drowsiness overtakes Him nor sleep
C To Him belongs whatever is in the heavens and whatever is on the earth
D Who is it that can intercede with Him except by His permission?
E He knows what is [presently] before them
E1 and what will be after them
D1 and they encompass not a thing of His knowledge except for what He wills
C1 His Kursi extends over the heavens and the earth
B1 and their preservation tires Him not
A1 And He is the Most High, the Most Great
Unfortunately for those using chiastic structure to help "prove" the Book of Mormon's ancient origins, other passages and books with no link to Hebrew origins are found. One such look is at Dr. Seuss' Green Eggs and Ham:
A I do not like them, Sam-I-am
B I do not like green eggs and ham.
C Would you like them here or there?
C1 I would not like them here or there. I would not like them anywhere.
B1 I do not like green eggs and ham.
A1 I do not like them, Sam-I am.
The article "Hebraicisms, Chiasmus, and Other Internal Evidence for Ancient Authorship in 'Green Eggs and Ham'" by Robert Patterson in Dialogue: A Journal of Mormon Thought (Vol 33 No. 4, Winter 2000, p 163), although poking fun at chiasms, is instructive and worth the read.
Solomon Spaulding wrote a manuscript that is now missing (some critics believe it is the actual source of the Book of Mormon) had another book, Manuscript Found, in which appears the following Chiasmus:
A There is an Intelligent Omnipotent Being, who is self-existent and infinitely
B good and benevolent Matter eternally existed.
C He put forth his hand and formed it into such bodies as he pleased.
D He presides over the universe and has a perfect knowledge of all things.
E From his own spiritual substance he formed seven sons.
D1 These are his principal agents to manage the affairs of his empire.
C1 He formed the bodies of men from matter. Into each body he infused a particle of his own spiritual substance, in consequence of which man in his first formation was inclined to
B1 benevolence and goodness.
A1 There is also another great, intelligent Being who is self-existent and possessed of great power but not of omnipotence.
For more information about the missing manuscript, check this page and also more about Spaulding and his possible writing being the basis for the Book of Mormon.
James Strang (Wikipedia link), an early Mormon, left the church and formed his own church. He claimed to have translated ancient plates. Found within his writings are also chiasms. Learn more about them.
A work contemporaneous with the Book of Mormon, called The Late War Between the United States and Great Britain by G. J. Hunt, contains many parallels to the Book of Mormon. Such as chiasms:
For additional information about the parallels between these two books, look at the website A Comparison of The Book of Mormon and The Late War Between the United States and Great Britain.
So what does it tell us that chiasms appear in the Book of Mormon as far as informaing us about it's ancient origins? From what we can tell based on chiasms being found in other writiong, not much. John Welch brought much of chiastic structure in the Book of Mormon to the forefront. However, he cautioned:
Some people, of course, have gone overboard with this search, and caution must be employed; otherwise, it is possible to find chiasmus in the telephone book, and the effort becomes meaningless .. One must be careful in this quest, however, to avoid the problems of the 'hammer syndrome'-to the person holding a hammer, everything looks like a nail. To the person who knows only chiasmus and no other form of literary composition, everything may start looking like a chiasm.
Welch, John W (1997), Noel B. Reynolds, ed., "What Does Chiasmus in the Book of Mormon Prove?", Book of Mormon Authorship Revisited: the Evidence for Ancient Origins (Provo, Utah: Foundation for Ancient Research and Mormon Studies), ISBN 978-0-934893-25-1
Hugh W. Pinnock of the First Quorum of the Seventy, although feeling that such study is faith-promoting, also cautioned:
Because the study of Hebrew writing forms in the Book of Mormon can strengthen testimony and be quite exciting, a number of researchers and laypersons have become overly enthusiastic, much to the detriment of the subject and integrity of their studies.