Deu 6:6-9
But for the love of God to be of the right kind, the commandments of God must be laid to heart, and be the constant subject of thought and conversation. “Upon thine heart:” i.e., the commandments of God were to be an affair of the heart, and not merely of the memory (cf. Deu 11:18). They were to be enforced upon the children, talked of at home and by the way, in the evening on lying down and in the morning on rising up, i.e., everywhere and at all times; they were to be bound upon the hand for a sign, and worn as bands (frontlets) between the eyes (see at Exo 13:16). As these words are figurative, and denote an undeviating observance of the divine commands, so also the commandment which follows, viz., to write the words upon the door-posts of the house, and also upon the gates, are to be understood spiritually; and the literal fulfilment of such a command could only be a praiseworthy custom or well-pleasing to God when resorted to as the means of keeping the commandments of God constantly before the eye. The precept itself, however, presupposes the existence of this custom, which is not only met with in the Mahometan countries of the East at the present day (cf. A. Russell, Naturgesch. v. Aleppo, i. p. 36; Lane,Sitten u. Gebr. i. pp. 6, 13, ii. p. 71), but was also a common custom in ancient Egypt (cf. Wilkinson, Manners and Customs, vol. ii. p. 102).