What is Kaige revision?

The kaige revision, or simply kaige, is the group of revisions to the Septuagint made in order to more closely align its translation with the proto-Masoretic Hebrew. The name kaige derives from the revision's pervasive use of Koinē Greek: και γε to translate the Hebrew: וְגַם. The importance of this revision lies in its status as a precursor to later revisions by 'the Three' as well as the light it sheds on the origins of the Septuagint.

The individual revisions characteristic of kaige were first observed by Dominique Barthélemy in the Greek Minor Prophets Scroll from Nahal Hever. According to Arie Van Der Kooij "his thesis about the K T has been widely accepted, but his dating of Theodotion before Aquila has not."