Beha'alot'cha: Chapter 6
"The well that the princes dug out"

Rabbi Aba says that the title verse refers to the Congregation of Yisrael, to Aba and Ima and to the Patriarchs. Malchut is called both a 'well' when Isaac goes out with weapons from the side of Ima, and a 'sea' when it illuminates from the uppermost river of Aba. From the day that the Congregation of Yisrael entered exile the waters failed, but the righteous, Yesod, fills Malchut with the supernal flow so that the universe inherits all the blessings.