We have discovered from the inscriptions at Accad, upon the Euphrates, that in the time of Sargon, 3,800 years B.C., the days were divided into weeks of seven days, named after the sun and moon and the five planets, as they are now in places. And there were, moreover, "Sabbaths" set apart as days of "rest for the soul," "the completion of work." There were five of these Sabbaths in Chaldea every lunar month, occurring on the 7th, the 14th, the 19th, the 21st, and 28th of the month. That is to say, the new moon, the full moon, and the days half way between were Sabbaths, with the addition of a fifth Sabbath on the 19th day. On these days it was not lawful to cook food, to change one's dress, to offer a sacrifice; the king may not speak in public or ride in a chariot, or perform any kind of military or civil duty; even to take medicine was forbidden. It was a day of rest. And this was 3,800 B.C., nearly 2,000 years before Abraham lived, 2,300 years before Moses and the Ten Commandments, almost contemporary, according to the Bible records, with Cain and Abel. The day was already called the Sabbath. It had existed already for no one knows how long, probably thousands of years; it was a day of rest, and it was observed much as was subsequently the Jewish Sabbath. Without doubt the Jews only adopted a custom known to more civilised nations ages before, and they gave to it the sanction of their religion, as they and many other people have done to many matters. There is everywhere a strong tendency, if possible, to give religious sanction to every observance. The stronger emotions attract to themselves the lesser. So have the Jews and Mahommedans adopted sanitary precautions, the Hindus sanitary and marriage laws, and Christianity marriage laws also in their faiths. So did my friend mentioned in the preface include all civilisation in his religion. The observance of the Sabbath arose not from a religious command transmitted by Moses, but as the result of observation and custom thousands of years before, that a day of rest was needed for man.