נְצֹ֣ר לְשׁוֹנְךָ֣ מֵרָ֑ע וּ֝שְׂפָתֶ֗יךָ מִדַּבֵּ֥ר מִרְמָֽה׃
Strzeż języka swego od zła, i ust twoich od mowy zdradnéj.
Duties of the Heart
They (the Sages) began exhorting on the tongue before the other senses and limbs, because it is more difficult to control than all of them as David said: "Who is the man who desires life... guard your tongue from evil, and your lips from speaking deceit [depart from evil and do good; seek peace and pursue it]" (Tehilim 34:13). In our holy books, the exhortations to minimize speech are so numerous and well known that it is not unfamiliar to anyone.