Midrash su Proverbi 18:5

R. Joshua b. Karcha: "In reward of what have you lived so long?" He answered him: "Does it grieve you that I live so long?" He replied: "Rabbi, it is a study, and I want to learn it from you." He replied: "I never in my life looked into the face of a wicked man; for R. Jochan, in the name of R. Simon b. Jachai, said: "It is prohibited for a man to look in the face of a wicked man, as it is said (II Kings 3, 14) Surely, were it not that I regard the presence of Jehosaphat the King of Judah, I would not look toward thee nor see thee.'" Raba said: "From here (Prov. 18, 5) It is not good to favor the countenance of the wicked." When R. Joshua b. Karcha was dying, Rabbi asked him: "Bless me!" He said to him: "May it be His will that you should reach the half of my age." "And not your whole age?" said Rabbi to him. Whereupon he replied: "And what will your sons do? Will they tend sheep?" The disciples or R. Zera and, according to others, the disciples of R. Adda b. Ahaba asked him: "Whereby have you merited to live long?" He answered: "I never was angry in my house; I never walked in front of my superior, I never thought of Divine subjects in unclean alleys; I never walked four cubits without studying the Torah nor without Phylacteries; I never slept in the house of learning neither a sound sleep nor a nap: I never rejoiced when my neighbor was in misfortune, and I never called my fellowmen by nicknames."

(Pr. 18, 5) It is not good to favor the wicked person. [This passage signifies that] it is not good for the wicked that indulgence is shown them (in this world by the Lord). It was not good for Achab that indulgence was shown him in this world by the Holy One, praised be He! as it is said (I Kings 21, 29) Hast thou seen how Achab has humbled himself before me? (Pr. 18, 5) to wrest [the cause of the] righteous in judgment. [This passage signifies that] it is well for the just that no indulgence is shown them by the Holy One, praised be He! in this world. Happy are Moses and Aaron, because no indulgence was shown them in this world by the Holy One, praised be He! as it is said (Num. 20, 12) Because ye have not confided in me, etc. But if you had confided in me, your time to depart from this world would not yet have arrived. Happy are the righteous; for, not only do they obtain divine grace for themselves, but they also transfer the same to their children and their children's children, until endless generations. More of Aaron's children were destined to be burnt like Nadab and Abihu, as it is said (Lev. 10, 12) That were left. But the divine grace of their parents preserved them. Woe unto the wicked; for not only do they attach guilt unto themselves, but they also cause guilt to be attached to their children and their children's children unto endless generations. Many sons belonged to Canaan who were worthy to be relied upon as was Tabi, the servant of Rabban Gamaliel; but the guilt of their father prevented them from becoming so.