Deuteronomy 30:2 Halakhah

וְשַׁבְתָּ֞ עַד־יְהוָ֤ה אֱלֹהֶ֙יךָ֙ וְשָׁמַעְתָּ֣ בְקֹל֔וֹ כְּכֹ֛ל אֲשֶׁר־אָנֹכִ֥י מְצַוְּךָ֖ הַיּ֑וֹם אַתָּ֣ה וּבָנֶ֔יךָ בְּכָל־לְבָבְךָ֖ וּבְכָל־נַפְשֶֽׁךָ׃

and shalt return unto the LORD thy God, and hearken to His voice according to all that I command thee this day, thou and thy children, with all thy heart, and with all thy soul;