וְאָמַרְתָּ֣ אֲלֵיהֶ֗ם כֹּ֚ה אָמַ֣ר יְהוָ֔ה הֲיִפְּל֖וּ וְלֹ֣א יָק֑וּמוּ אִם־יָשׁ֖וּב וְלֹ֥א יָשֽׁוּב׃
Moreover thou shalt say unto them: Thus saith the LORD: Do men fall, and not rise up again? Doth one turn away, and not return?
Read halakhic rulings (Jewish law) on Jeremiah 8:4: and classical halakhic sources.