"Why did Peter correct the Septuagint?" My first LXX-related article (Bulletin for Biblical Research vol. 26.2)

I have always been fascinated by the New Testament use of the Old Testament, especially when it comes to the two different text-types underlying the Apostolic authors' citation. That's right: the inspired authors had, in a sense, two different Bibles to draw from: the Hebrew MT (or proto-MT), and the Greek Septuagint. Quite often (some would say the majority of times), they drew from the translation most familiar to their audience of Diaspora Jews and God-fearing Gentiles: the Greek Septuagint.
Excursus: once again, for the doubters--we have manuscripts of the Old Testament in Greek that pre-date the incarnation, and a side-by-side comparison of many texts of the NT with the Hebrew force the assumption that they were citing something else. Paraphrase won't cut it, because there is actually different material in the Apostles' citations that does not exist in the Hebrew but does exist in Greek OT manuscripts. I'm not trying to be snarky here, and forgive me if this is a bit too harsh, but the Greek Old Testament existed before the Apostles and denying this is the theological equivalent of suggesting that the US never landed on the moon.
The role of the Septuagint within New Testament theology is currently a hot-button (and fascinating) issue, and the reader should be aware of W. Edward Glenny's fantastic new article in the on-line journal Themelios vol. 41.2 (August 2016). The article is entitled "The Septuagint and Biblical Theology" and may be read here. This article is an essential introductory resource for those interested in this discussion.
Recently I had an article published by Bulletin for Biblical Research vol. 26.2 (2016) entitled "Why Did Peter Change the Septuagint? A Reexamination of the Significance of the Use of Titheimi in 1 Peter 2:6." First Peter 2:6 is one of the most fascinating instances of NT use of the OT since Peter's citation does not match either the LXX or the MT. In fact, my article is not the first to focus specifically on this verse; while my article stems from a paper I gave in 2009, in 2010 Dietrich-Alex Koch published a fascinating study (going a different direction than I did) in Zeitschrift fur Neuentestament Wissenschaft vol. 101; Koch and I are alike in that we both argue 1 Peter utilized the LXX text but altered it. Whereas Koch argues that 1 Peter 2:6 altered it to correct some awkward syntax of the LXX (and thus make the text clearer), I argue that 1 Peter changed it for lexical reasons: the Greek enballw was a sub-par lexical choice to describe the Messiah being "set" as  Cornerstone, and Titheimi was much superior for theological and discourse reasons. In fact Peter ends up creating a chiasm in verses 6-8:
***A. The Set One [titheimi] is
 *****B. honor to
 ********C. The believer
but
********C' To the unbeliever/disobedient one [textual variant here]
******B' dishonor
***A.' To those who are "set" [titheimi] for the purpose of disobedience.
This article will hold a soft spot in my heart since it's my first article since becoming a full-time professor at Baptist College of Ministry (fifth overall). Also, for some reason, BBR is my "lucky" journal in the sense that I have yet to have an article rejected by them (though this latest one had to go to a tie-breaker peer-reviewer, and involved some significant revision). For BBR I'm "2-for-2," for JETS I'm "1-3," and I have a couple other journals that I"m "1-for-1." I struggle, however, submitting journals to Tyndale Bulletin and Trinity Journal--collectively "0-for-5" for those two journals! (and Tyndale, especially, is probably the cream of the crop for Evangelical journals).
Finally, for those interested in further study of NT use of the OT in 1 Peter, pride of place will probably always belong to Dr. Karen Jobes and her work, especially her Baker Exegetical Commentary on 1 Peter and her essay "The Septuagint Textual Tradition in 1 Peter" in Septuagint Research: Issues and Challenges in the Study of the Greek Jewish Scripture (SBL, 2006). Also, in addition to Koch's article in ZNW, one very good article that I cited favorably is Jocelyn Williams, "A Case Study in Intertextuality: The Place of Isaiah in the 'Stone' Sayings in 1 Peter 2," Reformed Theological Review 66 (2007). Williams, like me, sees Peter as deliberately modifying the LXX for theological reasons in 1 Pet 2:6, and I build off of her work somewhat in my own article. Finally, as mentioned at the beginning, Glenny's brand-new Themelios article is a must-read for anybody interested in the topic.