One of the names of God. The word Achad, in Hebrew, signifies one or unity. It has been adopted by Freemasons as one of the appellations of the Deity from the passage in Deuteronomy (vi, 4): “Hear, O Israel: the Lord our God is (Achad) one Lord,” which the Jews wear on their phylacteries and pronounce with great fervor as a confession of their faith in the unity of God. Speaking of God as Achad, the Rabbis say, “God is one (Achad) and man is one (Achad). Man, however, is not purely one, because he is made up of elements and has another like himself; but the oneness of God is a oneness that has no boundary.”