(Devarim 6:6) "And these things that I command you this day shall be upon your heart": From "And you shall love the L-rd your G-d with all your heart," I do not know how I come to love the Holy One Blessed be He; it is, therefore written "And these things that I command you this day shall be upon your heart." For in this way you come to recognize the Holy One Blessed be He and to cleave to His ways.