Parsha Eikev is equated in terms of one’s being attentive to the little Mitzvot; the details, the Mitzvot that one tends to overlook, to ignore, to tread one’s heels on in the mad dash, but without which the Jewish people would lack the merit which sets us apart from common man. The little mitzvot, the small details are the ones epitomized by V’Ahavtah L’re’echa Komocha — caring for your fellow Jew as for yourself.
And so, we find Parsha Eikev placed on the heels of the end of Parsha Vaetchanan’s teachings regarding tefillin and mezuzah.
