Musar su Isaia 55:3

King Solomon, peace be upon him, also said (Proverbs 15:30-31) "What brightens the eye gladdens the heart; good news puts fat on the bones. He whose ear heeds the reprimand of life lodges among the wise." And every wise-hearted person should know that it is not likely that King Solomon, peace be upon him, composed idle words like these [in the middle of] words of reproof and fear of God for nothing - since Scripture has already testified about him (I Kings 5:11), "He was the wisest of all men." Rather this is the understanding of the thing: "What brightens the eye gladdens the heart" - the eye is a very esteemed organ, for they will see all the events that gladden the heart with it. But more esteemed than it is the ear, for they will hear good news, that puts fat on the bones, through it. For [the ear] has no feeling and it will not be fattened from the light of the eyes, unless it is a special enjoyment. And so did our Rabbis, may their memory be blessed, say (Bava Kamma 85b) that the ear is more esteemed than the other organs. For if one blinded his eye, he must pay for the value of his eye; but if he makes him deaf, he pays all of his value. And truly a person is obligated to serve, God, may He be blessed, with his limbs. And they were all formed for His service - as it is written, (Proverbs 16:4), "The Lord made everything for His sake." Even with the esteemed limbs that He formed in him, is he obligated to serve their Maker. And the great punishment is even much greater if he prevents them from doing His commandments, he does not do the service with them and he does not pay back the good that is done through them. For with his esteemed senses, God gave him a great kindness; and He crowned him with beauty and glory through them. Therefore he prefaced to mention one of the virtues of the ear in order for you to see the greatness of the obligation of its service. And afterwards, he explained that the service of the ear should be in listening to reprimand; and he said "He whose ear heeds the reprimand of life lodges among the wise." Its explanation is [that] it is fitting to dwell among the sages, since he can [then] listen to their reprimands. And our Rabbis, may their memory be blessed, said (Shemot Rabbah 27:9), If a man falls from a roof and all of his limbs are broken, he needs a bandage and a plaster for every one of his limbs and his bones. And a sinner who has sinned with all of his limbs is considered as if he received a great wound on all of his limbs - from the sole of his foot to his crown, as it is stated (Isaiah 1:6), 'From head to foot, no spot is sound.'" But behold the Holy One, blessed be He, heals all of his limbs with one bandage. And that is the listening of the ear, as it is stated (Isaiah 55:3), "Incline your ear and come to Me; hearken, and you shall be revived."

And now we shall speak about the faculty of hearing. Hearing, in itself, is good, as it is written (Isaiah 55:3): "Hear, and let your souls live." And (Mishlei 15:31): "The ear that hears the reproof of life, in the midst of the wise will it reside." And hearing works on a man to cause him to satisfy [an obligation] by hearing as if he had performed it himself. A proof may be adduced from the reading of the Megillah, the blowing of the shofar, and other such things, such as [the recitation of] Kiddush and the grace over meals, where one makes the blessing and all the listeners satisfy the obligation. Similarly, all of the receiving of the Torah was through hearing. All this, for good things. The reverse is true for bad things, G-d forbid. Hearing [bad things] also greatly affects a man's soul. It is well known what our sages of blessed memory have said (Kethuvoth 5b): "The Rabbis taught: 'Let a man not allow idle speech to be heard by his ears, for they are the first of the organs to be "burnt."'" How much more so [does this apply] to one who intends to cause rechiluth to be heard by his ears, this being proscribed by a negative commandment in the Torah, viz. (Shemoth 23:1): "You shall not bear a false report," or to one who hears, with intent, lashon hara and other forbidden things, or frivolous speech or leitzanuth (levity), in which instance his sin is too great to bear. And our sages of blessed memory have said about the scoffer (Avodah Zarah 18b) that suffering comes upon him, as it is written (Isaiah 28:22): "Do not scoff, lest your bonds be strengthened." And they have also said (Shabbath 33a): "Even he who listens [to obscenity] and remains silent [is condemned], it being written (Mishlei 22:14): 'The abhorred of the L-rd will abide there' [next to the speaker of obscenity.]"

We must not question this exegesis by saying that the "path" the Torah speaks about some people forsaking is the adoption of idolatry instead of Judaism, because of a rule that the only time G–d considers the mere contemplation of a sin as already culpable is when the sin in question is idol worship. This is based on the expression (11,28) ללכת אחרי אלהים אחרים, "To prepare to go after other deities." Clearly, the Torah, by not writing "when you have followed other deities," warns you that we are culpable for the mere intention. In all other instances the Torah does not threaten punishment for the mere contemplation of a sin.