בְּפֶ֗ה חָ֭נֵף יַשְׁחִ֣ת רֵעֵ֑הוּ וּ֝בְדַ֗עַת צַדִּיקִ֥ים יֵחָלֵֽצוּ׃
L’impie ruine son prochain avec sa bouche, mais les justes sont préservés par leur expérience.
Rashi on Proverbs
With his mouth, the flatterer The flatterer who entices his friend on an evil way, destroys him with his mouth.
Rashi on Proverbs
but with knowledge, righteous men are extricated But the righteous man is extricated from [the flatterer] with the knowledge of the Torah, which warned concerning him (Deut. 13: 9): “You shall not consent to him, etc.”