Thou shalt bind them — Thou shalt give all diligence, and use all means to keep them in thy remembrance, as men often bind something upon their hands, or put it before their eyes to prevent forgetfulness of a thing which they much desire to remember.
Related Commentaries of Deuteronomy 6:8
Deuteronomy 6:8
8 And thou shalt bind them for a sign upon thine hand, and they shall be as frontlets between thine eyes.