Midrasz do Królów II 14:6

You shall offer it terms of peace (Deuteronomy 20:10): Rabbi Levi said, "Moshe did three things and the Holy One, blessed be He, agreed with him. And these are them: It is written (Exodus 34:7), 'visits the iniquity of the fathers upon children.' But Moshe said (Deuteronomy 24:10), 'Fathers will not be put to death for children [and children will not be put to death for fathers].' And from where [do we know] that the Holy One, blessed be He, agreed with him? As it is stated (II Kings 14:6), 'But he did not put to death the children of the assassins, in accordance with what is written in the Book of the Torah of Moshe, [...] "Parents shall not be put to death for children, etc."' And the second was when he broke the tablets. And [the third] was in the days of Sichon and Og. The Holy One, blessed be He, said, 'Go and fight with him, block his acqueduct.' But Moshe did not do so, as it is stated (Deuteronomy 2:26), 'And I sent messengers.' The Holy One, blessed be He, said, 'By your life, you have done as is fitting, as I agree with you.'" Therefore Moshe warns Israel and says to them (Deuteronomy 20:10), "When you approach a town to attack it, you shall offer it terms of peace." "You shall offer it terms of (for) peace (leshalom)." In peace (beshalom) is not written here, so that they would go forth with peace and return in peace. As Avner and Avshalom about whom it is written, "in peace," did not return. But Moshe to whom Yitro said, "for peace," went and returned. Another interpretation [of] "You shall offer it terms of peace": It is speaking about the days of the king messiah, who opens to them with peace, as it is stated (Zechariah 9:10), "He shall speak peace to the nations, and his rule shall extend from sea to sea." "If it responds peaceably" (Deuteronomy 20:11); if they bind themselves, as it is stated (Isaiah 2:4), "And they shall beat their swords into plowshares and their spears into pruning hooks; nation shall not take up sword against nation; they shall never again learn war." "All the people present there shall be as tribute and serve you"(Deuteronomy 20:11); that they should bring you tribute. As it is stated (Psalms 68:32), "Tribute-bearers (chasmanim) shall come from Egypt," as they shall hurry (chasim) and bring their gifts; "Cush shall hasten (tarits) its gifts to God," as they shall run (ratsim) and bring their gifts. "But if it shall not make peace with you" (Deuteronomy 20:12). [If] a strange spirit enters into them and they rebel against the king messiah, he kills them immediately; as it is stated (Isaiah 11:4), "he shall strike down a land with the rod of his mouth, and slay the wicked with the breath of his lips." And he shall only leave Israel, as it is stated (Deuteronomy 32:12), "The Lord guided him alone, and there is no alien god with him."

33 Another interpretation of (Numb. 21:17), "Then Israel sang": This is one of the three things that Moses said before the Holy One, blessed be He, and He said [back] to him, "You have taught me." He said in front of Him, "Master of the Universe, from where does Israel know what they did (was wrong)? Did they not grow up in Egypt? And all of Egypt are idolaters. And when You gave the Torah, You did not give it to them, and they were also not standing there, as it is stated (Exod. 20:18), 'And the people stood from afar.' And You only gave it to me, as it is stated (Exod. 24:1), 'And He said to Moses, "Ascend to the Lord.'" And when You gave the statements (Ten Commandments), You did not give [them] to them. You did not say, 'I am the Lord, your (plural) God'; but rather I am the Lord, your (singular) God. [Hence] You said it to me. Did I sin?" The Holy One, blessed be He, said to him, "By your life, you have spoken well. You have taught Me! From now on, I will say the expression, 'I am the Lord, your (plural) God.'" The second one is when the Holy One, blessed be He, said ( in Numb. 34:7), "visiting the iniquity of the parents upon the children": Moses said, "Master of the Universe, how many evildoers begat righteous ones; should they be removed by the iniquities of their parents? Terach was an idol-maker, but his son, Abraham, was righteous; so too Hezekiah was righteous, but Ahaz, his father was an evildoer; Josiah was righteous, but Amon, his father, was an evildoer. Is this proper, that the righteous be struck for the iniquities of their parents?" The Holy One, blessed be He, said to him, "Behold, you have taught Me! By your life, I will nullify My words and preserve your words, as it is stated (Deut. 24:15), ‘The parents shall not die for the children, and the children shall not die for the parents'; and it is by your life that I shall write [these things] in your name, as it is stated (II Kings 14:6), 'as it is written in the Torah of Moses, which God commanded ....'" The third one is when the Holy One, blessed be He, said to him, "Make war on Sichon; even if he does not want to engage with you, wage war with him, as stated (Deut. 2:24), 'Get up, go and cross the Arnon .'" But Moses did not do like this. Rather what is written above? "And I sent messengers" (Deut. 2:26). The Holy One, blessed be He, said to him, "By your life, I will nullify My words and preserve your words, as it is stated (Deut. 20:11), 'When you approach a town to attack it, you shall offer it terms of peace.'" Once Sichon did not accept, the Holy One, blessed be He, felled him in front of them, as it is stated (Deut. 20:33), "and we smote him." And not only that, but even [with] those that were hiding themselves in the caves to kill [the Israelites], the Holy One, blessed be He, signaled to the mountain and it crushed them, as it is stated (Ps. 74:13-14), "who smashed the heads of the monsters in the waters. It was You who crushed the heads of Leviathan." A common proverb says [that] if you gave bread to an infant, let his mother know. The Holy One, blessed be He, said, "From where will Israel know the favor I did for them?" What did He do? He distanced the mountains from each other and the streams swept down [the corpses], as it is stated (Numb 21:17), "And the streams poured." And the Israelites passed by and sang song - "then Israel sang" (Numb. 21:17). Israel said, "It is for You to do miracles for us, but it is for us to bless and laud Your name" - "Salvation is to the Lord; upon Your people is Your blessing, Selah" (Ps. 3:9). Upon the waters was it decreed against Moses, so he was not mentioned in the song. Moses said, "Master of the Universe, "I am dying because of them. You gave them the Torah from the wilderness, as it is stated, (Numb. 21:18), 'and from the wilderness, Matanah (which is also the word for gift).' And they possessed (nachalu) it from my hands, as it is stated (Numb. 21:19), 'And from Matanah, Nachliel.'" And from when they possessed it, You decreed death upon me, as it is stated (Numb. 21:19), "and from Nachliel, Bamot" - and from possession comes death (menachal, ba mot). "And from Bamot, Haggai in the field of Moav" (Numb. 21:20), as it is stated (Deut. 34:6), "And He buried him in the valley in the land of Moav." Job said, "He is not partial to princes; the noble are not preferred to the wretched; for all of them are the work of His hands" (Job 34:19).