תחת אשר לא עבדת את ד’ אלקיך בשמחה ובטוב לבב מרב כל
The Torah tells us that the curses befell upon Bnei Yisrael due to the fact that we failed to serve Hashem our G-d with joy and a good heart from all [that we had]. This is seemingly puzzling; we were performing the Mitzvot, just not with a happy heart. For this it is deserving 98 curses?! The numerical value of ואהבת is 414; and it has the strength and power to nullify 2 powers of evil that exist in the world: עשו & ישמעאל which represented by 2 false beliefs Christianity and Islam, יש”ו & מחמוד which also has the numerical value of 414.
It says in the Torah ואהבת twice: ואהבת את ה‘ אלקיך and ואהבת לרעך כמוך אני השם . Interestingly enough, these 2 pesukim add up to the same numerical value: 907. This teaches us that they are interdependent. If one has אהבת השם then he has אהבת ישראל and vice versa.
The numerical value of ואהבת twice is 828 (414×2=828), this gives us double the strength to overcome these two nations, יש”ו & מחמוד. Through these 2 ואהבת one nullifies the power of עשיו & ישמעאל and we get our crowns of נעשה ונשמע. נעשה captures עשו with the power of עשיה doing and נשמע captures ישמעאל through שמיעה listening. The Gemara in Shabbat says that with the crowns of נעשה ונשמע come שמחת עולם על ראשם the joy of the world on their heads. One merits to these 2 crowns when he puts on his Tefillin. The מגלה עמוקות says that there are 403 words in the 4 Parshiot of Tefillin. The Tefillin shel yad nullifies Esau, as yad is the power of asiya— action, which is connected to the Naaseh crown. The Tefillin shel rosh is connected to the Nishma crown. When one wears Tefillin, he is filled with Ahavat Hashem and he is connected to Hashem and he is b’simcha. So תחת אשר לא עבדת השם בשמחה is alluding to the fact that we were lacking the Ahavat HaShem necessary to combat the opposing forces and sweeten the judgement of HaKadosh Baruch Hu. Thus, without the extra component of ahava needed, the curses would only be the result of a natural course of action. May we all merit to true Ahavat HaShem and Ahavat Yisrael.