אֵיכָ֤ה תֹֽאמְרוּ֙ חֲכָמִ֣ים אֲנַ֔חְנוּ וְתוֹרַ֥ת יְהוָ֖ה אִתָּ֑נוּ אָכֵן֙ הִנֵּ֣ה לַשֶּׁ֣קֶר עָשָׂ֔ה עֵ֖ט שֶׁ֥קֶר סֹפְרִֽים׃
How do ye say: ‘We are wise, and the Law of the LORD is with us’? Lo, certainly in vain hath wrought the vain pen of the scribes.
Read halakhic rulings (Jewish law) on Jeremiah 8:8: and classical halakhic sources.