Biblical Eloquence in Isaiah 28:10-15

In preparation for this post, I browsed through passages in Isaiah and looked to see what I had previously marked. I chose Isaiah because, though the passages are often difficult to understand, I've always found them to be beautifully written. Isaiah was quite the poet, and the "manner of speaking" among the Jews at this time is very different from today. As discussed in my Book of Mormon class (Isaiah being frequently quoted in the Book of Mormon), emphasis was conveyed through repetition, while today we use exclamation points and emoticons.

In this particular passage, Isaiah places clear emphasis on various topics by restating or repeating them. I've reformatted the following verses in order to make this emphasis clear.

10: For precept must be upon precept
      precept upon precept

an example of exergasia

      line upon line
      line upon line
      here a little
      and there a little:
13:But the word of the Lord was unto them
     precept upon precept
     precept upon precept
     line upon line
     line upon line
     here a little
     and there a little
     that they might go
     and fall backward
     and be broken
     and snared
     and taken.

According to Silva Rhetorica, such repetition could be called palilogia--the "repetition of the same word (or phrase?) for vehemence".

Later in the passage, we see exergasia emerging--a figure of repetition in which the wording, style, delivery, or general phrasing is changed.
  
15 Because ye have said, We have made a covenant with death, and with hell are we at agreement; when the overflowing scourge shall pass through, it shall not come unto us: for we have made lies our refuge, and under falsehood have we hid ourselves:

Each clause is essentially stating the same concept as the one before it; however, the new phrasing and wholly stylistic approach is attractive in a literary way. The concept Isaiah is attempting to get across (at least, what I am understanding) is that the people believed that they didn't need the Atonement and that they had found supposed safety in deceit. Each of the above lines states this concept in a slightly different way, lending emphasis to both the oral and written forms of Isaiah's words.