It will be remembered that in the primitive rite of blood-friendship a blood-stained record of the covenant is preserved in a small leathern case, to be worn as an amulet upon the arm, or about the neck, by him who has won a friend forever in this sacred rite.[484] It would even seem that this was the custom in ancient Egypt, where the red amulet, which represented the blood of Isis, was worn by those who claimed a blood-friendship with the gods.[485] It is a noteworthy fact, that it was in conjunction with the institution of this passover rite of the Lord’s blood-friendship with Israel, as a permanent ceremonial, that the Lord declared of this rite and its token: “It shall be for a sign upon thine hand, and for frontlets between thine eyes.”[486] And it is on the strength of this injunction, that the Jews have, to this day, been accustomed to wear upon their foreheads, and again upon their arm--as a crown and as an armlet--a small leathern case, as a sacred amulet, or as a “phylactery”; containing a record of the passover-covenant between the Lord and the seed of Abraham his friend. Not the law itself, but the substance of the covenant between the Lawgiver and his people, was the text of this amulet record. It included Exodus 13 : 3-10, 11-16, with its reference to God’s deliverance of his people from bondage, to the institution of the passover feast, and to the consecration of the redeemed first-born; also Deuteronomy 6 : 4-9, 13-22, with its injunction to entire and unswerving fidelity, in the covenant thus memorialized.