Rashi on Numbers 20:13/רש"י על במדבר כ׳:י״ג

1המה מי מריבה THESE ARE THE WATERS OF MERIBAH — These are they that were alluded to, though unwittingly, on another occasion: these it was that Pharaoh’s astrologers foresaw, saying that Israel’s deliverer would be punished through water. On that account they decreed (Exodus 1:22) “Every son that is born shall ye cast into the river” (Sanhedrin 101b).

2ויקדש בם AND HE WAS SANCTIFIED IN THEM — For Moses and Aaron died on account of them (cf. Targum Jonathan on). When the Holy One, blessed be He, executes judgement upon those who are holy to Him he is revered and sanctified by mankind. Similarly does it state, (Psalms 68:36) “Revered art Thou when Thou showest Thyself אלהים, Judge, in consequence of thy hallowed ones”; and similarly, too, does it state, (Leviticus 10:3) “Through those that draw near unto me shall I be sanctified” (see Rashi on that verse; Zevachim 115b).