Midrash su Proverbi 17:8

And it came to pass that when Isaac was old, and his eyes were dim (Gen. 27:1). Scripture states elsewhere: A gift (bribe) is as a precious stone in the eyes of him that hath it; whithersoever he turneth, he prospereth (Prov. 17:8). What may the gift (mentioned in this verse) be compared to? To a precious stone which shatters whenever it falls.⁵The gift becomes a bribe and ultimately brings harm to the recipient. This verse aptly refers to Isaac, for it is said: Now Isaac loved Esau because he did eat of his venison (lit. the game was in his mouth) (Gen. 25:28). What is the meaning of the game was in his mouth? It means that Esau ensnared⁶A play on words: tzayid (venison) and tzud (trap) the righteous Isaac with the words he spoke. You find that Esau committed every sin which the Holy One, blessed be He, detests; There are six things which the Lord hateth, yea, seven which are an abomination unto Him: haughty eyes, a lying tongue, and hands that shed innocent blood; a heart that deviseth wicked thoughts, feet that are swift in running to evil; a false witness that breatheth out lies, and he that soweth discord among brethren (Prov. 6:16–19). Whenever Esau entered the house, he would ask his father: “My father, is one obliged to tithe for salt?” Isaac would exclaim in amazement: “Observe, how scrupulous this son of mine is concerning the commandments!” And when his father would ask him: “Where were you today, my son?” “At the house of study,” the youth would reply and he would add: “Is this not the law under certain circumstances; are not these things prohibited and these permitted?” By such remarks, he entraped his father with his mouth. That is why he loved him. Thereupon, the Holy Spirit exclaimed: When he speaketh fair believe him not; for there are seven abominations in his heart (ibid. 26:25). Why did Isaac’s eyes become weak? They became weak because he beheld the countenance of the wicked Esau; also because he ate the venison he brought him, as it is said: For the gift blinded them that hath sight (Exod. 23:8).

Another interpretation (of Gen. 27:1): NOW IT CAME TO PASS, THAT WHEN ISAAC WAS OLD < AND HIS EYES WERE TOO WEAK TO SEE >. This text is related (to Prov. 17:8): A BRIBE IS A STONE OF GRACE (i.e., A PRECIOUS STONE) IN THE EYES OF THE ONE USING IT; WHEREVER HE TURNS, HE PROSPERS.²⁹Cf. Tanh., Gen. 6:8. Do not say it this way (i.e., with the word GRACE), but A BRIBE IS A STONE IN THE EYES OF THE ONE USING IT. Come and see what the Holy One's burnt offering (i.e., Isaac at his binding) has said: It is not seemly for him to be weak in the eyes. Should one who would give his life for the name of the Holy One and was bound upon the altar have had his eyes weakened? Nevertheless, the Holy One said: I have written in my Torah (in Exod. 23:8): AND DO NOT TAKE A BRIBE. Why? (Deut. 16:19:) BECAUSE A BRIBE BLINDS THE EYES OF THE WISE. So, when he received a bribe from Esau, I weakened his eyes. Now surely, if Isaac the Righteous had his eyes weakened because he took a bribe, how much the worse is it for < just > anyone who receives a bribe from others! It is therefore stated (in Prov. 7:8): A BRIBE IS A STONE OF GRACE. Therefore (in Gen. 27:1): NOW IT CAME TO PASS, THAT WHEN ISAAC WAS OLD AND < HIS EYES > WERE TOO WEAK < TO SEE >. The word "deception" was not mentioned here.