The Shabbat between Rosh HaShanah and Yom Kippur is referred to as Shabbat Shuva, the”Shabbat of Return.” It is named so on account of the opening verse of the Haftara Turn back, O Israel, until you reach the LORD your God…R. Aharon of Karlin would teach the verse this way: each person has a little bit of Godliness inside them and the verse means until your reach…your God…until one reaches the Godliness that lies within themselves.