This verse substantially repeats Bar 1.15 (see the comments there), signaling the ending of the prayer of confession. Bar 2.6-10 repeats the opening of the prayer (1.15-18).
Quoted with permission from Bullard, Roger A. and Hatton, Howard A. A Handbook on The Shorter Books of the Deuterocanon. (UBS Helps for Translators). New York: UBS, 2006. For this and other handbooks for translators see here.