Joshua 23:11 Midrash

וְנִשְׁמַרְתֶּ֥ם מְאֹ֖ד לְנַפְשֹֽׁתֵיכֶ֑ם לְאַהֲבָ֖ה אֶת־יְהוָ֥ה אֱלֹהֵיכֶֽם׃

Take good heed therefore unto yourselves, that ye love the LORD your God.

Read midrashic interpretation of Joshua 23:11: and classical rabbinic exegesis.