Kabbalah for Numbers 20:13

"And, behold, I will bring the flood of waters upon the earth" (Gen. 6:17). Rabbi Yehuda opened the discussion with the verse: "These are the waters of strife, wherein the children of Yisrael strove with Hashem and He was sanctified by them" (Num. 20:13). This is not the only place where the children of Yisrael strove with Hashem. Why does the text say "waters of strife" here, but not at any other place? These waters in particular are the waters of strife, for they gave strength and power to the Prosecutor. There are sweet waters and bitter waters. And there are pure and mucky waters. And there are waters of peace and of strife, That is why (it is written): "These are the waters of strife, wherein the children of Yisrael strove with Hashem". As they drew upon themselves that which they should not have (drawn, i.e. the Sitra Achra, also called the waters of strife) and they were defiled by them. And this is why it is written, "and He was sanctified by them."