Musar su Isaia 59:3

There are some people whose profession is lying. Namely, those people who go around and make up complete lies in order to increase social conversation or to be considered among the intelligent and knowledgeable. On this type it is written "lying lips are an abomination to G-d" (Mishlei 12:22). And also "your lips speak lies, your tongue mutters perverseness" (Isaiah 59:3). Our sages, of blessed memory, have already pronounced their judgment: "four classes of people do not receive the divine presence" (Sanhedrin 103a, Sota 42a), and one of these is the class of liars.