Musar su Isaia 9:16

And behold this group of slanderers is divided into six sections:
And the first section: When he attributes a blemish to a person and [that person] does not have the blemish. There are times that he will lie against beauty. And behold the heart of this one (has his mouth jump the trait of) [gathers the evil of the traits of] two bad groups - which are the group of the liers and the group of the slanderers. And behold we have been warned by the Torah not to accept evil speech - perhaps it is empty or a false matter - as it is stated (Exodus 23:1), “You must not carry false rumors.” And King Solomon, peace be upon him, said (Proverbs 17:4), “An evildoer listens to bad talk; a lie gives ear to malicious words.” Its explanation is - two groups accept evil speech: The first is is a violent evildoing man - from the usage [in] (Isaiah 9:16), “for all are ungodly and doing evil” - for he suspects the innocent, and loves to find a blemish and guilt about his fellow and a disgrace to his honor. And it will be that when he hears someone saying evil speech about his companion, the violence in his heart brings him to believe that the things are true. And the second group is [that of] the lying man. He also listens and believes malicious talk. Since he does not distance himself from false words, he will not be concerned if he accepts a lie, or if he listens to a false rumor. Hence he will be quick to accept evil speech. [The meaning of] “a lie gives ear,” is like a man of lies. And likewise (Jeremiah 9:5), “You dwell in the midst of deceit,” [means] in the midst of people of deceit; [and also] (Psalms 109:4), “and I am prayer,” [means] a man of prayer.

They further said (Shabbat 33a): "Due to the sin of obscene speech, new troubles arise and the young men of Israel die" (Isaiah 9:16)

Answer him that his words are those of the evil inclination. For the Sages brought their proofs from an explicit verse in scripture: "As a punishment for obscenity, troubles multiply, cruel decrees are proclaimed afresh, the youths of Israel die... for every one is a flatterer and slanderer, and every mouth speaks obscenities" (Isaiah 9:16). This verse mentions neither idol worship nor illicit relations nor murder but flattery, slander, and obscene speech. All of which are sins of the mouth in speech. And on these the decree went forth: "the youths of Israel die and the fatherless and widows cry out and are not answered... neither shall He have compassion."