וַיַּ֤עַשׂ גַּם־הוּא֙ מַטְעַמִּ֔ים וַיָּבֵ֖א לְאָבִ֑יו וַיֹּ֣אמֶר לְאָבִ֗יו יָקֻ֤ם אָבִי֙ וְיֹאכַל֙ מִצֵּ֣יד בְּנ֔וֹ בַּעֲב֖וּר תְּבָרֲכַ֥נִּי נַפְשֶֽׁךָ׃
און ער אױך האָט געמאַכט אַ מאכל און געבראַכט צו זײַן פֿאָטער; און ער האָט געזאָגט צו זײַן פֿאָטער: זאָל מײַן פֿאָטער אױפֿשטײן, און עסן פֿון זײַן זונס געפֿאַנג, כּדי דײַן זעל זאָל מיך בענטשן.
Akeidat Yitzchak
For that reason, and in order to avoid application by G'd of the harshest most painful detergents, Israel is exhorted by the prophet to do penitence. Failing this, removal of the stains on its character by outside forces will leave permanent scars on its body. If, however, Israel will take action herself to wash and cleanse its heart from evil, instead of waiting for the suffering imposed by outside pressures, it will be helped, will experience salvation. Jeremiah 2,21, then discusses repentance due to fear of retribution, whereas chapter four discusses repentance occasioned by love for G'd.