Rabbi Shimon examines the title verse, speaking about the flow of higher wisdom, the river that emanates from Eden, the deep stream of Yisrael Saba and Tevunah, and the higher sanctified rivers of Zeir Anpin. We learn that after Zeir Anpin and Malchut drink they give drink to every wild beast, and we are told of the four creatures - lion, ox, eagle and man - in the vision of Ezekiel. Rabbi Shimon talks about the uniting at different levels and how the blessings prevail from the watering of the stream. We learn about the time of judgment and the Spirit of Defilement that dwells upon someone who sinned. The Spirit of Defilement is removed through the purification of the offering, and the sprinkling of clean water is part of the purification and sanctification required in order to deserve the World to Come.