Midrash sa Mga Bilang 20:7: Devarim Rabbah, Midrash Tanchuma & Midrash Tanchuma Buber

Another matter: “At that time saying” – what is “saying [lemor]”?⁷The term “saying [lemor],” which literally means “to say,” generally implies that the speaker asks the listener to repeat what he says to others. This meaning is not relevant in this verse. Rabbi Azarya said: It is to say [lemor] to [all future] generations that they should pray in times of trouble. As Moses, although it was stated to him: “You will not cross this Jordan” (Deuteronomy 3:27), he began pleading.
Another matter: What is “saying”? Rabbi Akiva said: Moses said: ‘Master of the universe, answer me regarding my words, whether I will be entering the Land of Israel or I will not be entering.’
Another matter: What is “saying”? He said before Him: ‘Master of the universe, write my sin for the generations.’ Rabbi Shmuel said: To what is the matter comparable? It is to a king who decreed that anyone who gathers and eats Sabbatical Year produce⁸The reference is to unripe produce. During the Sabbatical Year, it is forbidden to pick produce until it ripens (see Etz Yosef). will be circulated [in disgrace] before a public assembly. A certain woman went, gathered, and ate. They began circulating her around the public assembly. She said to him: ‘My lord the king, if you please, let these unripe fruits be suspended from my neck, so the residents of the city will not say: They discovered that she had performed an act of sorcery or adultery. From the fact that they see the unripe fruit around my neck, they will know that it is due to them that I am being circulated around the public assembly.’ So, Moses said: ‘Master of the universe, let my sin be written for the generations, so Israel will not say: Moses falsified the Torah or said something that he was not commanded, and they will know that it was for nothing other than the water.’⁹The reference is to Moses’ sin at the incident of the waters of dispute [Mei Meriva] (see Numbers 20:7–13). That is, “at that time saying.”

(Numb. 20:7-8:) “Then the Lord spoke unto Moses saying, ‘Take the rod... and you shall provide the congregation and their cattle with water.” From here it is shown that the Holy One, blessed be He, is concerned for Israel's wealth.⁹⁶Numb. R. 19:9. (Ibid., vs. 10:) “So Moses and Aaron gathered the congregation before the rock.” [This verse] teaches that each and every person sees himself as if he were standing at the rock. And similarly it says (in Lev. 8:3), “And assemble the whole congregation at the entrance of the tent of meeting.” And so too when they crossed the Jordan, all of Israel fit in between the two poles of the ark, as stated (in Josh. 3:9), “And Joshua said to the Children of Israel, ‘Come closer and listen to the words of the Lord your God.” And it is [also] written (in Josh. 8:33), “All Israel [...] stood on either side of the ark.” Here also all Israel was standing and seeing the miracles which happened at the rock [in front of them]. They began to say, “Moses knows the natural properties of rock. If he wants, he will bring forth water out of this [other] one.” Moses found himself confronted with a dilemma: If he would listen to them, he would disregard the words of the Omnipresent; and the Holy One, blessed be He, (according to Job 5:13) “Catches the wise in their own cunning.” As for the whole of these forty years Moses had been keeping himself from becoming angry with them, because he was afraid of the oath that the Holy One, blessed be He, had sworn (in Deut. 1:35), “Not one of these people from this evil generation shall see [the good land].” They said to him, “Here is a rock. Just as you wish to bring [water] from another rock, you should bring it from this one.” He gave a command to them (in Numb. 20:10), “Please listen, you rebels, shall we bring forth [water for you] from this rock.” What is the meaning of “hamorim (rebels)?” There are many understandings of it. Hamorim is rebels; hamorim is fools, as in the islands of the sea they call fools, morim. Some say hamorim are those that [inappropriately] instruct their teachers. Hamorim [can also be] arrows, as stated (in I Sam 31:3), “and some of the arrows (morim) struck him, men with bows.” (Numb. 20:11:) “Then Moses raised his hand and struck.” [When] he struck one time, the rock began dribbling a little water, as stated (in Ps. 78:20), “See, he struck a rock, and water trickled out (yazuvu),” like a person with a discharge (zav), in that it dribbles [in] drops. They said to him, “Son of Amram, is this water for nursing children or for babes weaned from milk?” Immediately, he became angry with them, struck it (according to Numb. 20:11) “twice [with his rod], and a lot of water came forth.” Yet for all that, Moses only made [water] from the rock that the Holy One, blessed be He, had told him. And how do we see that they also brought out water from the rock that Israel had said to him and every rock and stone that was in that place? It is so stated (in Ps. 78:15), “He split rocks in the desert.” Moshe already had his [sin] in his hand; because [the Children of Israel] were silent and did not sing praise, they were [also] caught.

Another comment on this matter. Moses said to the Holy One, blessed be He: But perhaps they will not believe me, nor hearken to my voice (Exod. 4:1). And He said: What is that in thy hand? (ibid., v. 2). The word is written as mazeh (“what is this?”), but it may be read as mi-zeh (“with this”): “With this that is in your hand you will be punished,³¹Indicating that he would be punished for striking the rock with the rod (see Num. 20:7–13). for you have spoken slanderously against My children, just as the serpent spoke slanderously.” And He said: For God doth know (Gen. 3:5) that My son’s children are believers, and the descendants of believers. They are believers, because it is written: And the people believed (Exod. 4:31), and the descendants of believers, because it is written: And he believed in the Lord (Gen. 15:6). Just as I smote the snake with leprosy, so you shall be smitten by it, place your hand in your bosom. And he put his hand into his bosom; and behold, when he withdrew it, it was leprous and as white as snow (Exod. 4:6). And if it shall come to pass that they do not believe you (ibid., v. , 8), then you shall smite the waters of the Nile and they shall turn into blood. This was also a sign to him that he would be judged in the future because of water, as it is said: Out of the rock, etc. (Gen. 20:8).