And now, Israel, what does the LORD require of you, but to reverence the LORD, to walk in all his ways, to love him, to serve the LORD with all your heart and with all your soul, and to keep the commandments and statutes of the LORD, which I am commanding you today for your good?
Deuteronomy 10:12-13

יב  וְעַתָּה, יִשְׂרָאֵל--מָה יְהוָה אֱלֹהֶיךָ, שֹׁאֵל מֵעִמָּךְ:  כִּי אִם-לְיִרְאָה אֶת-יְהוָה אֱלֹהֶיךָ לָלֶכֶת בְּכָל-דְּרָכָיו, וּלְאַהֲבָה אֹתוֹ, וְלַעֲבֹד אֶת-יְהוָה אֱלֹהֶיךָ, בְּכָל-לְבָבְךָ וּבְכָל-נַפְשֶׁךָ.
יג  לִשְׁמֹר אֶת-מִצְו‍ֹת יְהוָה, וְאֶת-חֻקֹּתָיו, אֲשֶׁר אָנֹכִי מְצַוְּךָ, הַיּוֹם--לְטוֹב, לָךְ.