Midrash su Salmi 145:9

(Deut. 29:9:) “Your tribal leaders, [your elders, and your law officers].” Although I have appointed for you heads, judges, elders, and law officers, you shall all be equal before me, since it is stated (ibid., cont.), “every person in Israel.” Another interpretation (of Deut. 29:9): All of you are responsible for each other. Even though there is [only] one righteous person among you, you all shall survive (literally, stand) through his merit; and not only you, but the whole world in toto, as stated (in Prov. 10:25), “but a righteous person is the foundation for the world.”³A more common translation would be: BUT A RIGHTEOUS PERSON IS AN EVERLASTING FOUNDATION. However, when one sins, the whole generation is stricken, and so you find in the case of Achan (in Josh. 22:20), “Was it not Achan ben Zerah who committed [embezzlement] in the proscription (i.e., the herem of Jericho)?” If with the measure of punishment which is small, the [whole] generation was seized, how much the more [will the generation prosper], with the measure of [divine] favor which is great! It is therefore stated (in Deut. 29:9), “every person in Israel”; and not only the great ones who are among us, but (according to vs. 10) “Your infants, your wives, and your alien.” It is therefore stated (in Deut. 29:9), “every person.” Now flesh and blood shows more mercy over males than over females, but the Holy One, blessed be He, is not like that. Rather (according to Ps. 145:9), “His mercy is upon all his works,” upon males and upon females, upon the righteous and upon the wicked, as stated (in Deut. 29:10, cont.), “from the one who chops your wood to the one who draws your water.” (Deut. 29:10, cont.), “From the one who chops your wood.” R. Isaac ben Tavlay said, “[This] teaches that, when the Gibeonites came to [Moses he did not accept them; but when they came to] Joshua, he did accept them.⁴According to Josh. 9:27, Joshua gave these menial tasks to the Gibeonites. Thus it is stated (in Josh. 9:4), ‘And they also acted with cunning.’ What is the meaning of ‘they also?’ [This] teaches that they had come to Moses, and he had not accepted them.”

Now these are the ordinances (Exod. 21:1). Scripture says (elsewhere) in reference to this verse: These also are sayings of the wise. To have respect of persons in judgment is not good (Prov. 24:23). The Holy One, blessed be He, said to Israel: Remember that I gave you the Torah, in which is written: These are the statutes and commandments. To have respect of persons in judgment is not good. What is meant by this? If a judge acts differentially toward a particular witness and perverts the law because of him, the Shekhinah departs (from him), for it is written: The Lord is good to all (Ps. 145:9). Because of that it is written: God standeth in a congregation of God; in the midst of judges He judgeth (ibid. 82:1).

There was a Min who said to R. Abina: "It is written (II Sam. 7, 23) And who is like Thy people, like Israel, the only nation on the earth? Why do you pride yourself over it? Are you not mingled among other nations, of whom it reads (Is. 40, 17) All the nations are as naught before Him?" And he answered: "A prophet of your own nation has testified concerning us (Ib. b), for it is written (Num. 23, 9) And among the nations it shall not be reckoned." R. Elazar raised the following contradictions: "It is written (Ps. 145, 9) The Lord is good to all, and it is also written (Lam. 3, 25) The Lord is good unto those that hope in Him. This question may be likened to one who possesses a fruit garden. When he waters it, he waters all of the trees, and when he covers up the roots, he does so only to the best of them."