Мидраш к Шмот 23:9

R. Samuel the son of Nahmani said that R. Jonathan stated: Whoever rebukes his companion for religious reasons earns a share of divine grace, as it is said: He that rebuketh a man shall in the end find more favor (Prov. 28:23). And furthermore a thread of divine favors will be drawn about him, as is said: He shall find favor. Scripture says: Mine ordinance shall ye do (Lev. 18:4). These are ordinances which, if they were not enumerated in the Torah, ought to have been. Scripture is speaking here of idolatry and blasphemy. My statutes shall ye keep, to walk therein (ibid.). These are the commandments against which the evil inclination contends, and against which the peoples of the earth rebel. These are: the wearing of garments made of wool and linen,¹²The law of shatnez; see Lev. 19:19. This commandment and all the following ones are disregarded as irrational by non-Jews. the eating of pig,¹³See Lev. 11:7. the spittle of a childless sister-in-law,¹⁴After one has refused to marry his brother’s widow under the law of levirate marriage; see Deut. 25:5–10. mixing seeds,¹⁵Deut. 22:9–11. stoning an ox for killing a human being,¹⁶Exod. 21:29. the heifer whose neck was broken,¹⁷Lev. 14:1–21. the bird sacrifice brought by a leper,¹⁷ a firstling of an ass,¹⁸Exod. 13:13. meat prepared in milk,¹⁹Exod. 23:9. and the goat that has been sent away (the scapegoat).²⁰Lev. 16:1–34. Azazel, the area where the scapegoat would perish. You might maintain that these are unimportant prohibitions. Hence Scripture says: I am the Lord: I have decreed them, and you art not permitted to repudiate them.

You shall not oppress a stranger: Rabbi Eliezer said, "For what reason did the Torah issue warnings with regard to mistreatment of a stranger in thirty-six places? Because [a stranger's] inclination is toward evil, that they will not return to their inclination. Having yourselves been strangers: From here Rabbi Eliezer said, "The blemish that is in you, do not point it out in your fellow."

(Bamidbar 10:30) "And he said: I pray ("na") you, do not leave us." "Na" is a term of imploration. He said to him: If you do not take it upon yourself (to remain with us), I decree it upon you. For now, (if you leave,) Israel will say: Yithro became a proselyte not out of love, but only in expectation of a portion in the land, which, seeing not to be forthcoming, he abandoned us. Variantly: (Moses said to him:) You think you are increasing G-d's honor (by planning to make conversions in your land.) You are only diminishing it! How many (prospective) proselytes would take shelter under the wings of the Shechinah (if you remained.) But now, you are closing the door against them. They will say: If Yithro, the father-in-law of the king, did not take it upon himself (to remain with Israel), how much more so, we! "inasmuch as you have known our camping ('chanothenu') in the desert": Moses said to him: If another, who had not seen the miracles and wonders wrought for us in the desert, up and left, it might befit him, but you, who have seen them, can you do so? R. Yehudah says you who saw the "chein" ("favor" [a homiletic reading of "chanothenu"]) bestowed upon our fathers in Egypt, viz. (Shemot 12:36) "And the L-rd placed the favor of the people in the eyes of Egypt," would you pick up and leave? "and you have been 'eyes' for us": And not that alone, but in all things that were concealed from our eyes, you enlightened us, viz. (Ibid. 18:21) "And you shall see from all the people, etc." Now were these things (of appointing judges) not known to Moses from Sinai, viz. (Ibid. 23) "If you do this thing and G-d commands you, then you will be able to bear up"? And why did they escape Moses? To credit the thing to Yithro. Variantly ("and you have been 'eyes' for us"): that he (the proselyte) be as beloved by us as the apple of our eye, viz. (Devarim 10:19) "And you shall love the stranger," (Shemot 22:2) "And a stranger you shall not taunt and you shall not oppress."