Why is there Chiasmus in the Book of Abraham?

The Book of Abraham (like the Book of Mormon and the Book of Moses) contains examples of chiasmus such as in Abraham 1:3:

A It was conferred upon me
B from the fathers;
C it came down from the fathers, from the beginning of time,
D yea, even from the beginning,
D’ or before the foundation of the earth,
C’ down to the present time, even the right of the firstborn, or the first man, who is Adam, or first father,
B’ through the fathers
A’ unto me.

How did Joseph Smith know about chiasmus and why would he have included examples in the Book of Abraham if no one noticed it in the Book of Mormon?

See:

Pearl of Great Price Central- Chiasmus in the Book of Abraham

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